Fri·Sep 6, 2024Friday·September 6, 2024

1. 01*

   Monojets from compressed weak frustrated dark matter

   Benjamin Fuks🇫🇷 · Mark D. Goodsell🇫🇷 · Taylor Murphy🇫🇷

   We extend the so-called hyperchargeless Higgs triplet model to include a weak triplet of Dirac fermions and a Dirac fermion $X$ transforming trivially under the Standard Model gauge group. We are motivated in part by a collection of anomalies that can be interpreted as a new scalar state with mass of approximately 152 GeV coupling to $W$ but not $Z$ bosons, which may be consistent with the electrically neutral triplet scalar in this model (provided that it mixes very slightly with the Standard Model Higgs boson). Meanwhile, the lightest neutral fermion in the model is stable and can be thermal dark matter with the correct relic abundance if it mixes lightly with the neutral triplet fermion, such that the dark matter is composed mostly of $X$. Because $X$ couples to the Standard Model only through a Yukawa-like interaction with the pair of triplets, this model falls into the frustrated dark matter paradigm. Finally, the spectrum of exotic fermions in this model can exhibit the strong compression favored by the current excess in the monojet channel, and evades multijet constraints in the region favored by monojets. In this work we explore this model's phenomenology and compare the parameter space regions best suited to each of the aforementioned excesses and constraints.

   hep-phPRD(2025)·12 citations
2. 02*

   Jet observables in heavy ion collisions : a white paper

   Ankita Budhraja🇳🇱 · Marco van Leeuwen🇳🇱 · José Guilherme Milhano🇵🇹

   This paper presents an overview of a survey of jet substructure observables used to study modifications of jets induced by interaction with a Quark Gluon Plasma. We further outline ideas that were presented and discussed at the \textit{New jet quenching tools to explore equilibrium and non-equilibrium dynamics in heavy-ion collisions} workshop, which was held in February 2024 at the ECT${}^{\ast }$ in Trento, Italy. The goal of this white paper is to provide a brief report on the study of jet quenching observables earlier conducted and to present new ideas that could be relevant for future explorations.

   hep-phhep-ex2 citations
3. 03*

   ADFilter -- A Web Tool for New Physics Searches With Autoencoder-Based Anomaly Detection Using Deep Unsupervised Neural Networks

   Sergei V. Chekanov🇺🇸 · Wasikul Islam🇺🇸 · Rui Zhang🇺🇸 · Nicholas Luongo🇺🇸

   A web-based tool called ADFilter was developed to process collision events using autoencoders based on a deep unsupervised neural network. The autoencoders are trained on a small fraction of either collision data or Standard Model Monte Carlo simulations. The tool calculates loss distributions for input events, helping to determine the degree to which the events can be considered anomalous. It also calculates two-body invariant masses both before and after the autoencoders, as well as cross sections. Real-life examples are provided to demonstrate how the tool can be used to reinterpret existing LHC results with the goal of significantly improving exclusion limits.

   hep-phInformation(2025)·5 citations
4. 04*

   WIMP dark matter in bulk viscous non-standard cosmologies

   Esteban González🇨🇱 · Carlos Maldonado🇨🇱 · N. Stefanía Mite🇨🇱 · Rodrigo Salinas🇨🇱

   In this paper, we explored an extension of the classical non-standard cosmological scenario in which the new field, $\varphi$, which interacts with the radiation component in the early universe, experiences dissipative processes in the form of a bulk viscosity. Assuming an interaction term given by ${\Gamma }_{\varphi }{\rho }_{\varphi }$, where ${\Gamma }_{\varphi }$ accounts for the decay rate of the field and ${\rho }_{\varphi }$ corresponds to its energy density, and a bulk viscosity according to the expression $\xi ={\xi }_0{\rho }_{\varphi }^{1/2}$ in the framework of Eckart's theory, we apply this novel non-standard cosmology to study the parameters space for WIMPs Dark Matter candidate production. This parameter space shows deviations from the classical non-standard cosmological scenario, obtaining new regions to search for this candidate. In particular, for certain combinations of the free parameters, we found large regions in which the model can establish the DM and reproduce the current observable relic density.

   hep-phastro-ph.COJCAP(2024)·6 citations
5. 05*

   Delving into the Phenomenology of Very Special Relativity: From Subatomic Particles to Binary Stars

   Alessandro Santoni🇨🇱

   In this thesis, we investigate the implications of Lorentz-violating (LV) theories, focusing on Very Special Relativity (VSR) and its phenomenological consequences. Initially presented as an alternative mechanism for neutrino masses, VSR has since become a significant part of the general LV framework, distinguished by its unique group structure and non-local operators. After a comprehensive introduction to the principles of LV and VSR, we present the corresponding modifications to the Dirac equation. A significant part of the thesis is dedicated to the development of a Hamiltonian formalism within the VSR context, addressing its inherent non-localities. This approach is further extended to the non-relativistic limit, connecting it to the conventional Schrödinger picture. We then set upper bounds on the VSR parameters by examining its corrections to a wide range of physical systems and scenarios, such as Landau levels of charged particles, the $\mathsf{g}-$factor of electrons, the energy spectrum of ultracold neutrons in Earth's gravitational field, and the gravitational emission from binary stars. The latter analysis led us to the construction of a VSR field theory for spin-2 fields in flat space, which was surprisingly found to accommodate a gauge-invariant graviton mass. Through this comprehensive study, we bridged theoretical predictions with experimental data, paving the way for future explorations in Lorentz-violating theories and highlighting their potential to address unresolved questions in modern physics.

   hep-phgr-qchep-th3 citations
6. 06*

   Search for singly charmed dibaryons in baryon-baryon scattering

   Yao Cui🇨🇳 · Xinmei Zhu🇨🇳 · Yuheng Wu🇨🇳 · Hongxia Huang🇨🇳 · Jialun Ping🇨🇳

   We perform a systematical investigation of the singly charmed dibaryon system with strangeness numbers $S=-1$, $-3$ and $-5$ in the framework of the chiral quark model. Two resonance states with strangeness numbers $S=-1$ are obtained in the baryon-baryon scattering process. In the $\Lambda {\Lambda }_c$ scattering phase shifts, the $\Sigma {\Sigma }_c$ appears as a resonance state with the mass and width 3591 MeV and 11.1 MeV, respectively. In the $N{\Xi }_c$ and $N{\Xi }_c^{\prime }$ scattering phase shifts, the $\Sigma {\Sigma }_c^{\ast }$ exhibits as a resonance state with the mass and width 3621-3624 MeV and 14.9 MeV, respectively. All these heavy-flavor dibaryons are worth searching for in experiments. Besides, we would like to emphasize that the coupling calculation between the bound channels and open channels is indispensable. The study of the scattering process maybe an effective way to look for the genuine resonances.

   hep-phnucl-thPRD(2024)·3 citations
7. 07*

   Further study of the maximally symmetry breaking patterns in an $\mathrm{SU}(8)$ theory

   Ning Chen🇨🇳 · Zhiyuan Chen🇨🇳 · Zhanpeng Hou🇨🇳 · Zhaolong Teng🇨🇳 · Bin Wang🇨🇳

   An $\mathrm{SU}(8)$ theory was previously found to be the minimal simple gauge group where all three-generational Standard Model (SM) fermions can be nontrivially embedded. It is maximally broken into a subgroup of $\mathrm{SU}(8)\to {\mathcal{G}}_{441}\equiv \mathrm{SU}(4{)}_s\otimes \mathrm{SU}(4{)}_W\otimes \mathrm{U}(1{)}_{X_0}$ at the grand unified theory scale by the $\mathrm{SU}(8)$ adjoint Higgs field of $63_{\mathbf{H}}$. Gauge symmetries in the strong and the weak sectors are extended by one and two ranks, respectively. The sequential strong-weak-weak (SWW) symmetry breaking stages were found to generate the observed hierarchical SM quark/lepton masses as well as the Cabibbo-Kobayashi-Maskawa mixing pattern with the precise flavor identifications~[17, 20]. We further study the possible weak-strong-weak and weak-weak-strong symmetry breaking patterns, and compare with the results that we have obtained by following the SWW sequence. The two-loop renormalization group equations following both patterns are analyzed, where we cannot achieve the gauge coupling unification in the field theory framework. Through these analyses, we suggest the gauge coupling unification to be interpreted in the context of the affine Lie algebra.

   hep-phPRD(2025)·3 citations
8. 08*

   Open charm mesons in variational scheme and HQET

   K. K. Vishwakarma🇮🇳 · Ritu Garg🇮🇳 · Alka Upadhyay🇮🇳

   The charm ($D$) and charm-strange ($D_s$) mesons are investigated in a variational scheme using Gaussian trial wave functions. The Hamiltonian contains Song and Lin potential with a constant term dependent on radial and orbital quantum numbers. The Gaussian wave function used has a dependence on radial distance $r$, radial quantum number $n$, orbital quantum number $l$ and a trial parameter $\mu$. The obtained spectra of $D$ and $D_s$ mesons are in good agreement with other theoretical models and available experimental masses. The mass spectra of $D$ and $D_s$ mesons are also used to plot Regge trajectories in the ($J$, $M^2$) and ($n_r$, $M^2$) planes. In ($J$, $M^2$) plane, both natural and unnatural parity states of $D$ and $D_s$ mesons are plotted. The trajectories are parallel and equidistant from each other. The two-body strong decays of $D$ and $D_s$ are analyzed in the framework of heavy quark effective theory using computed masses. The strong decay widths are given in terms of strong coupling constants. These couplings are also estimated by comparing them with available experimental values for observed states. Also, the partial decay width ratios of different states are analyzed and used to suggest assignments to the observed states. We have assigned the spin-parity to newly observed $D_{s2}^{\ast }(2573)$ as the strange partner of $D_2^{\ast }(2460)$ identified as $1^3{P}_2$, $D_1^{\ast }(2760)$ and $D_{s1}^{\ast }(2860)$ as $1^3{D}_1$, $D_3^{\ast }(2750)$ and $D_{s3}^{\ast }(2860)$ as $1^3{D}_3$, $D_2(2740)$ as $1D_2$, $D_0(2550)$ as $2^1{S}_0$, $D_1^{\ast }(2660)$ and $D_{s1}^{\ast }(2700)$ as $2^3{S}_1$, $D_J^{\ast }(3000)$ as $2^3{P}_0$, $D_J(3000)$ as $2P_1$, $D_2^{\ast }(3000)$ as $1^3{F}_2$ states.

   hep-phFew Body Syst.(2025)·3 citations
9. 09*

   Possible bound states of Heavy Baryonium and Heavy Dibaryon systems

   Jing-Juan Qi🇨🇳 · Zhen-Hua Zhang🇨🇳 · Xin-Heng Guo🇨🇳 · Zhen-Yang Wang🇨🇳

   In this work, we systematically study the heavy baryonium and heavy dibaryon systems using the Bethe-Salpeter equation in the ladder and instantaneous approximations for the kernel. Our results indicate that all the heavy baryonium systems, specifically ${\Lambda }_Q{\bar{\Lambda }}_Q$, ${\Xi }_Q{\bar{\Xi }}_Q$, ${\Sigma }_Q{\bar{\Sigma }}_Q$, ${\Xi }_Q^{\prime }{\bar{\Xi }}_Q^{\prime }$, and ${\Omega }_Q{\bar{\Omega }}_Q$ ($Q=c,b$), can form bound states. Among the heavy dibaryon systems, only the ${\Xi }_Q{\Xi }_Q$ system with $I=0$ and the ${\Sigma }_Q{\Sigma }_Q$ systems with $I=0$ and $I=1$ can exist as bound states. Additionally, the ${\Sigma }_Q{\bar{\Sigma }}_Q$ system with $I=2$ and the ${\Sigma }_Q{\Sigma }_Q$ system with $I=1$ are not deeply bound.

   hep-phnucl-thPRD(2024)·5 citations
10. 10*

    Doubly heavy tetraquark bound and resonant states

    Wei-Lin Wu🇨🇳 · Yao Ma🇨🇳 · Yan-Ke Chen🇨🇳 · Lu Meng🇩🇪 · Shi-Lin Zhu🇨🇳

    We calculate the energy spectrum of the S-wave doubly heavy tetraquark systems, including the $Q{Q}^{(\prime )}\bar{q}\bar{q}$, $Q{Q}^{(\prime )}\bar{s}\bar{q}$, and $Q{Q}^{(\prime )}\bar{s}\bar{s}$ ($Q^{(\prime )}=b,c$ and $q=u,d$) systems within the constituent quark model. We use the complex scaling method to obtain bound states and resonant states simultaneously, and the Gaussian expansion method to solve the complex-scaled four-body Schrödinger equation. With a novel definition of the root-mean-square radii, we are able to distinguish between meson molecules and compact tetraquark states. The compact tetraquarks are further classified into three different types with distinct spatial configurations: compact even tetraquarks, compact diquark-antidiquark tetraquarks and compact diquark-centered tetraquarks. In the $I(J^P)=0(1^{+})$ $QQ\bar{q}\bar{q}$ system, there exists the $D^{\ast }D$ molecular bound state with a binding energy of $-14$ MeV, which is the candidate for $T_{cc}(3875{)}^{+}$. The shallow ${\bar{B}}^{\ast }\bar{B}$ molecular bound state is the bottom analog of $T_{cc}(3875{)}^{+}$. Moreover, we identify two resonant states near the $D^{\ast }{D}^{\ast }$ and ${\bar{B}}^{\ast }{\bar{B}}^{\ast }$ thresholds. In the $J^P=1^{+}$ $bb\bar{q}\bar{q}(I=0)$ and $bb\bar{s}\bar{q}$ systems, we obtain deeply bound states with a compact diquark-centered tetraquark configuration and a dominant ${\chi }_{{\bar{3}}_c\otimes 3_c}$ component, along with resonant states with similar configurations as their radial excitations. These states are the QCD analog of the helium atom. We also obtain some other bound states and resonant states with ``QCD hydrogen molecule" configurations. Moreover, we investigate the heavy quark mass dependence of the $I(J^P)=0(1^{+})$ $QQ\bar{q}\bar{q}$ bound states. We strongly urge the experimental search for the predicted states.

    hep-phhep-exhep-latnucl-thPRD(2024)·24 citations
11. 11*

    Polarized and un-polarized ${\mathcal{R}}_{K^{\ast }}$ in and beyond the SM

    Ishtiaq Ahmed🇵🇰 · Saba Shafaq🇵🇰 · M. Jamil Aslam🇵🇰 · Saadi Ishaq🇵🇰

    The Standard Model (SM) is lepton flavor universal, and the recent measurements of lepton flavor universality in $B\to (K,K^{\ast }){\ell }^{+}{\ell }^{-}$, for $\ell =\mu ,e$, decays now lie close to the SM predictions. However, this is not the case for the $\tau$ to $\mu$ ratios in these decays, where there is still some window open for the new physics (NP), and to accommodate them various extensions to the SM are proposed. It will be interesting to identify some observables which are not only sensitive on the parametric space of such NP models but also have some discriminatory power. We find that the polarization of the $K^{\ast }$ may play an important role, therefore, we have computed the unpolarized and polarized lepton flavor universality ratios of $\tau$ to $\mu$ in $B\to K^{\ast }{\ell }^{+}{\ell }^{+}$, $\ell =\mu ,\tau$ decays. The calculation shows that in most of the cases, the values of the various proposed observables fall within the current experimental sensitivity, and their study at some on going and future experiments will serve as a tool to segregate the variants of the NP models.

    hep-phhep-exPTEP·0 citations
12. 12*

    Pion pair production in $e^{+}{e}^{-}$ annihilation at next-to-leading order matched to Parton Shower

    E. Budassi🇮🇹 · C. M. Carloni Calame🇮🇹 · M. Ghilardi🇮🇹 · A. Gurgone🇮🇹 · G. Montagna🇮🇹 · M. Moretti🇮🇹 · O. Nicrosini🇮🇹 · F. Piccinini🇮🇹 · F. P. Ucci🇮🇹

    The pion pair production in $e^{+}{e}^{-}$ annihilation at flavour factories plays a crucial role in the determination of the hadronic contribution to the muon anomalous magnetic moment. The recent CMD-3 measurement of the pion form factor via energy scan displays a significant difference with the previous experimental determinations. In order to contribute to an improved theoretical description and simulation of energy scan experiments, we present a calculation of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}(\gamma )$ hadronic channel at next-to-leading order matched to a Parton Shower algorithm in QED and sQED. According to the recent advances in the literature, particular attention is paid to the treatment of the pion composite structure in loop diagrams beyond the commonly used factorised sQED approach, as well as to the modelling of multiple photon radiation through the Parton Shower algorithm. In particular, we carry out a detailed discussion on the inclusion of the pion form factor in the virtual sQED corrections according to two independent methods, inspired by the generalised vector meson dominance model and the dispersive approach, respectively. We find the two methods to be in remarkable agreement. We show phenomenological results for inclusive and differential observables which are relevant for precision energy scan measurements, focusing on the impact of the radiative corrections and the effect of the various approaches for the treatment of the pion form factor. Our calculation is implemented in an updated version of the Monte Carlo event generator BabaYaga@NLO, that can be used for fully exclusive simulations in data analysis.

    hep-phhep-exJHEP(2025)·32 citations
13. 13*

    NLO EW and QCD corrections to polarised same-sign WW scattering at the LHC

    Ansgar Denner🇩🇪 · Christoph Haitz🇩🇪 · Giovanni Pelliccioli🇩🇪

    We present the first calculation of same-sign WW scattering at the LHC in the fully leptonic decay channel including the modelling of polarisation for intermediate electroweak bosons and radiative corrections up to NLO EW+QCD accuracy. The predictions rely on a pole expansion and on the split of polarisation states at matrix-element level. Doubly-polarised and unpolarised signals are investigated together with full off-shell results. A detailed phenomenlogical analysis is carried out focusing on differential observables that discriminate between polarisation states, paving the way for refined polarisation-oriented analyses of vector-boson scattering with Run-3 LHC data.

    hep-phhep-exJHEP(2024)·31 citations
14. 14*

    Physics case for quarkonium studies at the Electron Ion Collider

    Daniël Boer🇳🇱 · Chris A. Flett🇫🇷 · Carlo Flore🇮🇹 · Daniel Kikoła🇵🇱 · Jean-Philippe Lansberg🇫🇷 · Maxim Nefedov🇫🇷 · Charlotte Van Hulse🇫🇷 · Shohini Bhattacharya🇺🇸 · Jelle Bor🇳🇱 · Mathias Butenschoen🇩🇪 · Federico Ceccopieri🇫🇷 · Longjie Chen🇨🇳 and 32 other authors

    The physics case for quarkonium-production studies accessible at the US Electron Ion Collider is described.

    hep-phhep-exnucl-exnucl-thPPNP(2025)·39 citations
15. 15*

    Relaxation times for disoriented isospin condensates in high energy heavy ion collisions

    Olivia Chabowski🇺🇸 · Joseph I. Kapusta🇺🇸 · Mayank Singh🇺🇸

    Fluctuations between charged and neutral kaons measured by the ALICE Collaboration in Pb-Pb collisions at the LHC exceed conventional explanations. Previously it was shown that if the scalar condensate is accompanied by an electrically neutral isospin--1 field then the combination can produce large equilibrium fluctuations where $⟨\bar{u}u⟩\ne ⟨\bar{d}d⟩$. Hadronizing strange and anti-strange quarks might then strongly fluctuate between charged ($u\bar{s}$ or $s\bar{u}$) and neutral ($d\bar{s}$ or $s\bar{d}$) kaons. Here we estimate the times for the condensates to achieve their equilibrium probability distributions within causal volumes in high energy heavy ion collisions. This is achieved by modeling the temperature dependence of the condensates, mesonic collective excitations, decay rates of the associated fields, and employing the Langevin and Fokker-Planck equations. Within this model, we find that the equilibration times are short compared with the expansion time, making disoriented isospin condensates a viable explanation for the anomalous fluctuations observed at the LHC.

    hep-phnucl-thPRC(2025)·3 citations
16. 16*

    Constraining the isotropic CPT-odd coefficients of the Standard Model Extension by a combined DUNE and ESSnuSB analysis

    L. A. Delgadillo🇲🇽 · O. G. Miranda🇲🇽 · G. Moreno-Granados🇺🇸 · C. A. Moura🇧🇷

    Based on an analysis that considers the isotropic CPT-odd Standard Model Extension (SME) coefficients, we find new constraints for them coming from a combined DUNE and ESSnuSB fit. Furthermore, we investigate the correlations of the standard oscillation parameters, the leptonic CP-violating phase, ${\delta }_{CP}$, and the atmospheric mixing angle, ${\sin }^2{\theta }_{23}$, with respect to the SME coefficients $(a_L{)}^T$. The combination of DUNE and ESSnuSB may establish the strongest limit on the diagonal coefficient $(a_L{)}_{\mu \mu }^T$ compared to the existing limits in the literature. We also consider the possible effect of the SME coefficient $(a_L{)}^Z$ on neutrino propagation and discuss how this can affect DUNE limits on the coefficient $(a_L{)}^T$ found elsewhere.

    hep-phPRD(2025)·6 citations
17. 17*

    Heavy neutrinos: The chosen ones to bring balance to physics

    Manuel González-López🇪🇸

    The Standard Model of Particle Physics has proven to be tremendously successful as the fundamental theory that describes the elementary particles that compose our Universe, as well as the interactions among them. Despite the countless experimental results that have ratified the theoretical predictions of this model, there are sound reasons to think it must be extended. Some are rather theoretical, while others are due to the observation of certain phenomena that the the Standard Model cannot explain. Chief among the latter is the massive nature of neutrinos, the most elusive particles in the Universe, which are rendered massless by the Standard Model. This contradiction establishes the starting point of this PhD thesis, which discusses the role of heavy neutrinos (a hypothetical new type of neutrino) as responsible of generating the mass of the observed neutrinos. Certain extensions of the Standard Model will be explored, which include these new particles and offer common solutions to neutrino masses and to other open problems. The consequences of the interactions of these new neutrinos with Standard Model particles will also be studied, as well as how they can be characterized by the means of present and future experimental observations.

    hep-ph0 citations
18. 18*

    First Search for Ultralight Dark Matter Using a Magnetically Levitated Particle

    Dorian W. P. Amaral🇺🇸 · Dennis G. Uitenbroek🇳🇱 · Tjerk H. Oosterkamp🇳🇱 · Christopher D. Tunnell🇺🇸

    We perform the first search for ultralight dark matter using a magnetically levitated particle. A sub-millimeter permanent magnet is levitated in a superconducting trap with a measured force sensitivity of $0.2fN/\sqrt{\mathrm{Hz}}$. We find no evidence of a signal and derive limits on dark matter coupled to the difference between baryon and lepton number, $B-L$, in the mass range $(1.10360\text{ - }1.10485)\times 10^{-13}\mathrm{eV}/c^2$. Our most stringent limit on the coupling strength is $g_{B-L}\lesssim 2.98\times 10^{-21}$. We propose the POLONAISE (Probing Oscillations using Levitated Objects for Novel Accelerometry in Searches of Exotic physics) experiment, featuring short-, medium-, and long-term upgrades that will give us leading sensitivity in a wide mass range and demonstrating the promise of this novel quantum sensing technology in the hunt for dark matter.

    hep-phhep-exquant-phPRL(2025)·24 citations
19. 19*

    Supergroup Symmetries and the Hierarchy Problem

    Nathaniel Craig🇺🇸 · Emanuele Gendy🇩🇪 · Jessica N. Howard🇺🇸

    We show that the mass of a scalar field transforming in the fundamental of an $SU(N|N+1)$ supergroup internal symmetry is protected against one-loop corrections from quartic, gauge, and yukawa interactions. Although the negative-norm states responsible for this protection are likely fatal to a unitary interpretation of the theory, such ultraviolet insensitivity may open a new avenue to understanding the lightness of the Higgs.

    hep-phhep-th1 citation
20. 20*

    Systematics of U-Spin Sum Rules for Systems with Direct Sums

    Margarita Gavrilova🇺🇸 · Stefan Schacht🇬🇧

    A rich mathematical structure underlying flavor sum rules has been discovered recently. In this work, we extend these findings to systems with a direct sum of representations. We prove several results for the general case. We derive an algorithm that enables the determination of all $U$-spin amplitude sum rules at arbitrary order of the symmetry breaking for any system containing a direct sum of the representations $0\oplus 1$. Potential applications are numerous and include, for example, higher order sum rules for CP-violating charm decays with an arbitrary number of final states.

    hep-phhep-exJHEP(2024)·7 citations
21. 21*

    High Energy Physics from Low Energy Physics

    Roland C. Farrell🇺🇸

    The separation between physics at low and high energies is essential for physics to have any utility; the details of quantum gravity are not necessary to calculate the trajectory of a cannon ball. However, physics at low and high energies are not completely independent, and this thesis explores two ways that they are related. The first is through a UV/IR symmetry that relates scattering processes at low and high energies. This UV/IR symmetry manifests in geometrical properties of the $S$-matrix, and of the RG flow of the coupling constants in the corresponding effective field theory. Low energy nuclear physics nearly realizes this UV/IR symmetry, providing an explanation for the smallness of shape parameters in the effective range expansion of nucleon-nucleon scattering, and inspiring a new way to organize the interactions between neutrons and protons. The second is through the use of quantum computers to simulate lattice gauge theories. Quantum simulations rely on the universality of the rules of quantum mechanics, which can be applied equally well to describe a (low energy) transmon qubit at 15 milli-Kelvin as a (high energy) 1 TeV quark. This thesis presents the first simulations of one dimensional lattice quantum chromodynamics on a quantum computer, culminating in a real-time simulation of beta-decay. Results from the first simulations of a lattice gauge theory on 100+ qubits of a quantum computer are also presented. The methods developed in this thesis for quantum simulation are ``physics-aware", and are guided by the symmetries and hierarchies in length scales of the systems being studied. Without these physics-aware methods, 100+ qubit simulations of lattice gauge theories would not have been possible on the noisy quantum computers that are presently available.

    ↳ quant-phhep-lathep-phnucl-th0 citations
22. 22*

    Explicit Asymptotic Solutions of ${\nu }_e+e^{-}$ Neutrino Networks for Large Sets of Partial Differential Equations in Core-Collapse Supernovae

    Raghav Chari🇺🇸

    In physics, accurately modeling large-scale phenomena such as core-collapse supernovae, (CCSN), and neutron star mergers are computationally challenging and require solving large sets of partial and ordinary differential equations. Traditional methods used widely in the scientific community are predominantly implicit, which are approximations that often require drastic simplifications and can be computationally inefficient. This thesis presents results on a new software suite titled "Fast Explicit Neutrino Networks" or "FENN", that introduces a suite of algebraically stabilized explicit methods known as explicit asymptotic for modeling Neutrino Electron Scattering, (NES), presenting a novel approach that combines the stability of traditional methods with enhanced computational efficiency. Initial results show that FENN can deliver accurate solutions for neutrino networks at improved computational speeds. This thesis further covers new results for scaled networks beyond the constraints of standard energy groupings, as well as the dynamics of neutrino interactions such as the scattering of various neutrino flavors -- electron neutrinos (${\nu }_e$), electron anti-neutrinos (${\bar{\nu }}_e$), and muon/tau neutrinos (${\nu }_{\mu ,\tau }$) as well as their anti-particles (${\bar{\nu }}_{\mu ,\tau }$) -- off electrons.

    ↳ astro-ph.HEastro-ph.SRhep-ph0 citations
23. 23*

    On the Energy Spectrum of Non-Newtonian Turbulence

    Esteban Calzetta🇦🇷

    The goal of this paper is to propose a theoretical framework to study homogeneous and isotropic turbulence in a viscoelastic fluid, regarded as a perturbation of a Newtonian incompressible fluid, where the fluid relaxation time, or else the Weissenberg number, plays the role of small parameter. We use a Martin-Siggia-Rose framework to obtain a formal expression for the velocity correlation function of the non-Newtonian flow, and we expand this formal expression to linear order in the relaxation time. The coefficients in this expansion are correlation functions of the base Newtonian flow. We do not derive these correlations, instead we replace them by their values according to K41 theory, which could be regarded as an extreme form of renormalization. While substantial work will be necessary to validate the model against numerical and experimental data, preliminary results are encouraging.

    ↳ physics.flu-dynhep-phPhysical Review Fluids(2025)·1 citation
24. 24*

    Chiral condensate in a holographic dilute nuclear matter

    Kazuo Ghoroku. Kouji Kashiwa · Motoi Tachibana · Fumihiko Toyoda

    We study chiral condensate in cold nuclear matter on the basis of holographic theory, which would be dual to a baryon system in quantum chromodynamics (QCD) in the confinement phase. Our model is a holographic model based on the D$3$/D$7$ branes. The magnitude of the chiral condensate obtained in our model is found to gradually increase with increasing baryon density $n$ within the range of the dilute nucleon gas, $n<1$, where our model is available. This is a result for the chiral condensate in the holographic model as a function of $n$, which can be compared to the chiral perturbation theory.

    ↳ hep-thhep-ph0 citations
25. 25*

    Schwinger vs Unruh

    G.E. Volovik🇫🇮

    It is shown that the temperatures which characterise the Unruh effect, the Gibbons-Hawking radiation from the de Sitter cosmological horizon and the Hawking radiation from the black hole horizon acquire the extra factor 2 compared with their traditional values. The reason for that is the coherence of different processes. The combination of the coherent processes also allows us to make the connection between the Schwinger pair production and the Unruh effect.

    ↳ gr-qccond-mat.otherhep-phPisma Zh.Eksp.Teor.Fiz.(2024)·2 citations
26. 26*

    The Giant Radio Array for Neutrino Detection (GRAND) Collaboration -- Contributions to the 10th International Workshop on Acoustic and Radio EeV Neutrino Detection Activities (ARENA 2024)

    Rafael Alves Batista · Aurélien Benoit-Lévy · Teresa Bister · Martina Bohacova · Mauricio Bustamante · Washington Carvalho · Yiren Chen · LingMei Cheng · Simon Chiche · Jean-Marc Colley · Pablo Correa · Nicoleta Cucu Laurenciu and 113 other authors

    This is an index of the contributions by the Giant Radio Array for Neutrino Detection (GRAND) Collaboration to the 10th International Workshop on Acoustic and Radio EeV Neutrino Detection Activities (ARENA 2024, University of Chicago, June 11-14, 2024). The contributions include an overview of GRAND in its present and future incarnations, methods of radio-detection that are being developed for them, and ongoing joint work between the GRAND and BEACON experiments.

    ↳ astro-ph.IMastro-ph.HEhep-exhep-ph1 citation
27. 27*

    Cosmic superstrings, metastable strings and ultralight primordial black holes: from NANOGrav to LIGO and beyond

    Satyabrata Datta🇨🇳 · Rome Samanta🇮🇹

    While topologically stable cosmic strings are disfavoured by the recent observation of nHz stochastic gravitational waves (GW) by Pulsar Timing Arrays (PTA), e.g., NANOGrav, cosmic metastable strings and superstrings are not. However, because the gravitational waves from all classes of strings generally span a wide range of frequencies, they contradict LIGO's non-observation of stochastic gravitational waves at the $f\sim$ 25 Hz band for a substantial string-parameter space favoured by the PTA data. Suppose ultralight primordial black holes ($M_{\mathrm{BH}}<10^9$ g) existed in the early universe. In this case, they reduce the amplitude of the GWs at higher frequencies by providing an early matter-dominated phase, alleviating the tension between LIGO observation and PTA data. We show that the recent PTA data complemented by future LIGO-Virgo-KAGRA (LVK) runs plus detectors such as LISA and ET would be able to dapple the properties and further search strategies of such ultralight primordial black holes which are otherwise fairly elusive as they evaporate in the early universe by Hawking radiation.

    ↳ gr-qcastro-ph.COhep-phJHEP(2025)·27 citations
28. 28*

    Lattice QCD extraction of the ${\eta }_c$-meson $t$-dependent parton distribution function

    B. Blossier🇫🇷 · C. Mezrag🇫🇷 · J.M. Morgado Chávez🇫🇷 · T. San José🇫🇷

    The formalism of short-distance factorization, conveyed through the pseudo-distribution approach, connects space-like and light-cone correlators and thus allows for the extraction in lattice QCD of a number of parton distributions. We compute the $t$-dependent parton distribution function of valence quarks in a ${\eta }_c$-meson. After reviewing the main ideas behind the pseudo-distribution formalism, and relying on the analytic structure of Ioffe-time distributions, we come up with a proposal for a model-independent extraction of $t$-dependent parton distribution functions. We present results for the ${\eta }_c$-meson Ioffe time valence $t$-dependent parton distribution function at a renormalization scale of $3\text{GeV}$.

    ↳ hep-lathep-phPoS(2025)·1 citation
29. 29*

    Exploring neutrino interactions in light of present and upcoming galaxy surveys

    Sourav Pal🇮🇳 · Rickmoy Samanta🇮🇳 · Supratik Pal🇮🇳

    In the standard cosmological framework, neutrinos begin to free-stream after the weak interaction phase ends in the early universe, at a temperature of approximately $T\sim 1\mathrm{MeV}$. However, the onset of neutrino free-streaming can be delayed if additional interactions occur in the early universe, leaving imprints on both the cosmic microwave background (CMB) angular power spectra and the large-scale structure (LSS) matter power spectra. We present a thorough analysis of early universe neutrino interactions with a fairly generalized parameterization of the interaction rates as a power law in neutrino temperature. In this (6+2) parameter scenario, we constrain the cosmological parameters along with the free-streaming redshift and the sum of the neutrino mass in presence of such interactions, with the help of full shape (FS) galaxy power spectra from BOSS Data Release 12. Our analysis reveals that a combined dataset of FS along with CMB and BAO offers improved constraints on the free-streaming redshift from present data, comparable to the forecast results from future CMB-S4 data. Additionally, we investigate the prospects of future galaxy surveys by forecasting on Euclid mission in combination with Planck and CMB-S4, and find significant improvement on both the free-streaming redshift and the sum of the neutrino mass than the existing constraints as well as than CMB-S4 alone.

    ↳ astro-ph.COhep-phJCAP(2025)·11 citations
30. 30*

    Signatures of linearized gravity in atom interferometers: A simplified computational framework

    Leonardo Badurina🇺🇸 · Yufeng Du🇺🇸 · Vincent S. H. Lee🇺🇸 · Yikun Wang🇺🇸 · Kathryn M. Zurek🇺🇸

    We develop a general framework for calculating the leading-order, general relativistic contributions to the gravitational phase shift in single-photon atom interferometers within the context of linearized gravity. We show that the atom gradiometer observable, which only depends on the atom interferometer propagation phase, can be written in terms of three distinct contributions: the Doppler phase shift, which accounts for the tidal displacement of atoms along the baseline, the Shapiro phase shift, which accounts for the delay in the arrival time of photons at atom-light interaction points, and the Einstein phase shift, which accounts for the gravitational redshift measured by the atoms. For specific atom gradiometer configurations, we derive the signal and response functions for two physically motivated scenarios: (i) transient gravitational waves in the transverse-traceless gauge and, for the first time, in the proper detector frame, and (ii) transient massive objects sourcing weak and slow-varying Newtonian potentials. We find that the Doppler contribution of realistic Newtonian noise sources (e.g., a freight truck or a piece of space debris) at proposed atom gradiometer experiments, such as AION, MAGIS and AEDGE, can exceed the shot noise level and thus affect physics searches if not properly subtracted.

    ↳ gr-qcastro-ph.COhep-phhep-th+1PRD(2025)·17 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.