Thu·Aug 1, 2024Thursday·August 1, 2024

1. 01*

   Gravitational form factors of pion from top-down holographic QCD

   Daisuke Fujii🇯🇵 · Akihiro Iwanaka🇯🇵 · Mitsuru Tanaka🇯🇵

   The gravitational form factors (GFFs) of pions are calculated from a top-down holographic quantum chromodynamics (QCD) approach with momentum transfer dependence for the first time. It is important because the GFFs of hadrons have information on the internal stress distribution that may provide insight into the mechanism of how QCD forms hadrons. The forward limit value of this GFFs, i.e. the D-term, was also obtained. Furthermore, in this approach, we observe the so-called glueball dominance, in which pions have gravitational interactions via infinite glueball spectra.

   hep-phhep-lathep-thnucl-thPRD(2024)·27 citations
2. 02*

   Confronting perturbative QCD with the hardest exclusive reactions: kaon electromagnetic form factors

   Long-Bin Chen🇨🇳 · Wen Chen🇨🇳 · Feng Feng🇨🇳 · Yu Jia🇨🇳

   Among countless channels of hard exclusive reactions, the kaon electromagnetic form factors (EMFFs) are of special interest, which have been measured up to $Q^2\sim 50{\mathrm{GeV}}^2$ in the timelike domain. The kaon EMFFs thereby serve an ideal platform to critically examine the validity and effectiveness of perturbative QCD (pQCD) in accounting for hard exclusive processes. In this work we confront the pQCD predictions that incorporate the next-to-next-to-leading-order (NNLO) perturbative corrections, with the available kaon EMFFs data set from experimental measurements and from lattice predictions. The inclusion of the NNLO corrections turns out to have a substantial and positive impact. If the profiles of the kaon light-cone distribution amplitudes (LCDAs) are taken from the recent lattice QCD prediction by {\tt LPC} Collaboration, the satisfactory agreement between theory and data can be reached for both charged and neutral kaons, in both spacelike and timelike large-$Q^2$ domains.

   hep-phhep-exhep-latPLB(2025)·7 citations
3. 03*

   Dynamical generation of electroweak scale from the conformal sector: A strongly coupled Higgs via the Dyson--Schwinger approach

   Arpan Chatterjee🇪🇪 · Marco Frasca🇮🇹 · Anish Ghoshal🇵🇱 · Stefan Groote🇪🇪

   We propose a novel pathway to generate the electroweak (EW) scale via non-perturbative dynamics of a conformally invariant scalar sector at the classical level. We provide a method to estimate the non-perturbative EW scale generation using the exact solution of the background equations of motion in a scalar theory via the Dyson-Schwinger approach. Particularly, we find an analytical result for the Higgs mass in the strongly coupled regime in terms of its quartic self interaction term and the cut-off scale of the theory. We also show that the Higgs sector is an essential part of the Standard Model as, without it, a Yang--Mills gauge theory cannot acquire mass even if a self-interaction term is present. Our analysis lead to a more realistic model building with possible solutions to the gauge hierarchy problem and, in general, to the dynamical generation of any scales scales in nature, be it the visible sector or the dark sector.

   hep-phgr-qchep-thFortsch.Phys.(2025)·7 citations
4. 04*

   Improved Precision in $Vh(\to b\bar{b})$ via Boosted Decision Trees

   Philipp Englert🇩🇪

   Extracting bounds on BSM operators at hadron colliders can be a highly non-trivial task. It can be useful or, depending on the complexity of the event structure, even essential to employ modern analysis techniques in order to measure New-Physics effects. A particular class of such modern methods are Machine-Learning algorithms, which are becoming more and more popular in particle physics. We attempt to gauge their potential in the study of $Vh(\to b\bar{b})$ production processes, focusing on the leptonic decay channels of the vector bosons. Specifically, we employ boosted decision trees using the kinematical information of a given event to discriminate between signal and background. Based on this analysis strategy, we derive bounds on four dimension-6 SMEFT operators and subsequently compare them with the ones obtained from a conventional cut-and-count analysis. We find a mild improvement of $\mathcal{O}(\mathrm{few}\%)$ across the different operators.

   hep-ph6 citations
5. 05*

   Captured molecules could make a Bose star visible

   V. V. Flambaum🇦🇺 · I. B. Samsonov🇦🇺

   A Bose star passing through cold molecular clouds may capture atoms, molecules and dust particles. The observational signature of such an event would be a relatively small amount of matter that is gravitationally bound. This binding may actually be provided by invisible dark matter forming the Bose star. We may expect a relative excess of heavier atoms, molecules, and solid dust compared to the content of giant cold molecular clouds since the velocity of heavy particles at a given temperature is lower and it may be small compared to the escape velocity, $v_{\mathrm{rms}}=\sqrt{3k_{\mathrm{B}}T/m_{\mathrm{gas}}}\ll v_{\mathrm{esc}}=\sqrt{2GM/R}$. Finally, the velocity of this captured matter cloud may correlate with the expected velocity of free dark matter particles (e.g. expected axion wind velocity relative to Earth).

   hep-phastro-ph.COastro-ph.GAgr-qcPRD(2024)·1 citation
6. 06*

   Dark matter, leptogenesis and Z' in the B-L model

   XinXin Qi🇨🇳 · Hao Sun🇨🇳

   We discuss the interplay between dark matter, leptogenesis and a new gauge boson $Z^{\prime }$ in the $B-L$ model. A fermion dark matter $\chi$ carrying $U(1{)}_{B-L}$ charge is introduced to the model but not coupling with other particles. We consider the freeze-out and freeze-in mechanisms, and obtain the correct relic density respectively. We have scanned the feasible parameter space and found that the dark matter direct detection experiments imposed the most stringent constraints on the parameter space. The constraint on the parameter space places a limit on the mass of dark matter with $m_{\chi }\approx 1/2M_{Z^{\prime }}$ within a narrow region in the case of freeze-out scenario, and we can obtain the right baryon asymmetry result in the case of $m_{\chi }\subset [654$ GeV, 664 GeV]. For the freeze-in scenario, we have a much broader parameter space for $m_{\chi }$ and $M_{Z^{\prime }}$ but $g_{BL}$ is restricted at $10^{-5}$ level for $Q=0.1$. In both scenarios, $g_{BL}-M_{Z^{\prime }}$ is limited within a narrow region by the dark matter relic density, direct detection and baryon asymmetry constraints.

   hep-phEPJC(2025)·3 citations
7. 07*

   Electromagnetic $|G_E/G_M|$ ratios of hyperons at large timelike $q^2$

   G. Ramalho🇰🇷 · M.T. Peña🇵🇹 · K. Tsushima🇧🇷 · Myung-Ki Cheoun🇰🇷

   In recent years, it has become possible to measure not only the magnitude of the electric ($G_E$) and magnetic ($G_M$) form factors of spin $\frac{1}{2}$ baryons, but also to measure the relative phases of those quantities in the timelike kinematic region. Aiming to interpret present $|G_E/G_M|$ data on hyperons of the baryon octet, as well as to predict future data, we present model calculations of that ratio for large invariant 4-momentum square $q^2$ in the timelike region ($q^2>0$). Without any further parameter fitting,we extend to the timelike region a covariant quark model previously developed to describe the kinematic spacelike region ($q^2\le 0$) of the baryon octet form factors. The model takes into account both the effects of valence quarks and the excitations of the meson cloud which dresses the baryons. This application to the timelike region assumes an approximation based on unitarity and analyticity that is valid only in the large $q^2$ region. Using the recent data from BESIII we establish the regime of validity of this approximation. We report here that our results for the effective form factor (combination of $|G_E|$ and $|G_M|$) are in good agreement with the data already for $q^2$ values above 15 GeV${}^2$. In addition, a more conservative onset of the validity of the approximation is provided by the newly available $|G_E/G_M|$ data which suggest that our predictions may be compared against data for $q^2\ge$ 20 GeV${}^2$. This is expected in the near future, when the range of the present measurements is expanded to the 20--50 GeV${}^2$ region.

   hep-phhep-exhep-latnucl-ex+1PLB(2024)·14 citations
8. 08*

   Brane-vector dark matter and its connection to inflation and primordial gravitational waves

   Cao H. Nam🇻🇳 · Tran N. Hung🇻🇳

   The scalar mode describing the fluctuation of the 3-brane (the observable universe) in a five-dimensional bulk spacetime compactified on a circle is absorbed by the Kaluza-Klein U(1) gauge field, leading to a massive brane-vector living on the 3-brane. The brane-vector can be responsible for dark matter because it is odd under a ${\mathrm{Z}}_2$ symmetry, neutral under the Standard Model (SM) symmetries, and couples extremely weak to the SM particles due to its gravitational origin. Interestingly, the brane-vector dark matter could leave particular imprints on the cosmic microwave background (CMB) and the primordial gravitational waves. Hence, the precise measurements of the CMB and the observations of the primordial gravitational waves generated during the inflation can provide a potential way to probe the extra-dimensions and branes which are the main ingredients of string/M theory.

   hep-phgr-qchep-thEPJC(2024)·1 citation
9. 09*

   Axion-like Particle Effects on Photon Polarization in High-Energy Astrophysics

   Giorgio Galanti🇮🇹

   In this review, we present a self-contained introduction to axion-like particles (ALPs) with a particular focus on their effects on photon polarization: both theoretical and phenomenological aspects are discussed. We derive the photon survival probability in the presence of photon--ALP interaction, the corresponding final photon degree of linear polarization, and the polarization angle in a wide energy interval. The presented results can be tested by current and planned missions such as IXPE (already operative), eXTP, XL-Calibur, NGXP, XPP in the X-ray band and like COSI (approved to launch), e-ASTROGAM, and AMEGO in the high-energy range. Specifically, we describe ALP-induced polarization effects on several astrophysical sources, such as galaxy clusters, blazars, and gamma-ray bursts, and we discuss their real detectability. In particular, galaxy clusters appear as very good observational targets in this respect. Moreover, in the very-high-energy (VHE) band, we discuss a peculiar ALP signature in photon polarization, in principle capable of proving the ALP existence. Unfortunately, present technologies cannot detect photon polarization up to such high energies, but the observational capability of the latter ALP signature in the VHE band could represent an interesting challenge for the future. As a matter of fact, the aim of this review is to show new ways to make progress in the physics of ALPs, thanks to their effects on photon polarization, a topic that has aroused less interest in the past, but which is now timely with the advent of many new polarimetric missions.

   hep-phastro-ph.HEhep-thUniverse(2024)·11 citations
10. 10*

    Pion polarizabilities from a dispersive analysis of $\gamma \gamma \to \pi \pi$

    Viktoriia Ermolina🇩🇪 · Igor Danilkin🇩🇪 · Marc Vanderhaeghen🇩🇪

    We present results for the charged and neutral pion polarizabilities, obtained through a dispersive analysis of photon-fusion reactions with two pions in the final state. This analysis is motivated by current and future measurements at COMPASS, JLab (Hall D), and the BESIII measurement of single-virtual photon-fusion reactions in the space-like region, offering insight into generalized pion polarizabilities. To improve predictions within an unsubtracted dispersion formalism with only the pion left-hand cut, one needs to consider the influence of heavier left-hand cuts. We parametrize the latter using an expansion in a suitably constructed conformal variable, capturing the analytical structure of the left-hand cuts. The coefficients in this expansion are determined from the matching with the Lagrangian-based approach, the Adler zero constraint for $\gamma \gamma \to {\pi }^0{\pi }^0$, and a fit to the cross-section data. The extension to the single-virtual case is also discussed.

    hep-phEPJ Web Conf.(2024)·4 citations
11. 11*

    Real-time chiral dynamics at finite temperature from quantum simulation

    Kazuki Ikeda🇺🇸 · Zhong-Bo Kang🇺🇸 · Dmitri E. Kharzeev🇺🇸 · Wenyang Qian🇪🇸 · Fanyi Zhao🇺🇸

    In this study, we explore the real-time dynamics of the chiral magnetic effect (CME) at a finite temperature in the (1+1)-dimensional QED, the massive Schwinger model. By introducing a chiral chemical potential ${\mu }_5$ through a quench process, we drive the system out of equilibrium and analyze the induced vector currents and their evolution over time. The Hamiltonian is modified to include the time-dependent chiral chemical potential, thus allowing the investigation of the CME within a quantum computing framework. We employ the quantum imaginary time evolution (QITE) algorithm to study the thermal states, and utilize the Suzuki-Trotter decomposition for the real-time evolution. This study provides insights into the quantum simulation capabilities for modeling the CME and offers a pathway for studying chiral dynamics in low-dimensional quantum field theories.

    hep-phhep-lathep-thnucl-th+1JHEP(2024)·20 citations
12. 12*

    Numerical integration of the double- and triple-box integrals using threshold subtraction

    Dario Kermanschah🇩🇪 · Matilde Vicini🇨🇭

    We numerically integrate finite two- and three-loop scalar integrals using the threshold subtraction method. This represents a first step towards extending our calculation of the $N_f$-part to the full NNLO virtual corrections for the production of massive vector bosons.

    hep-phPoS(2024)·9 citations
13. 13*

    NLO corrections to triple vector-boson production in final states with three charged leptons and two jets

    Ansgar Denner🇩🇪 · Daniele Lombardi🇩🇪 · Santiago Lopez Portillo Chavez🇩🇪 · Giovanni Pelliccioli🇩🇪

    Tri-boson production together with vector-boson scattering is a privileged channel to study the electroweak structure of the Standard Model. Upcoming LHC running stages will allow to measure these processes at unprecedented accuracy and for all possible final states, which requires to push theory predictions to still unexplored frontiers. In this work we present the first calculation for the process $\mathrm{p}\mathrm{p}\to {\mu }^{+}{\mu }^{-}{\mathrm{e}}^{+}{\nu }_{\mathrm{e}}\mathrm{j}\mathrm{j}$ at the LHC in a tri-boson phase space. We evaluate the three LO contributions, namely the $\mathcal{O}({\alpha }^6)$, which contains the genuine tri-boson signature, along with the $\mathcal{O}({\alpha }_{\mathrm{s}}{\alpha }^5)$ and $\mathcal{O}({\alpha }_{\mathrm{s}}^2{\alpha }^4)$, and the two $\mathcal{O}({\alpha }^7)$ and $\mathcal{O}({\alpha }_{\mathrm{s}}{\alpha }^6)$ NLO corrections. The calculation is based on full Standard-Model matrix elements, including all resonant and non-resonant terms, complete spin correlations and interference effects. Integrated and differential cross sections are presented for a fiducial region inspired by High Luminosity LHC prospect studies. We find electroweak corrections of $-14\%$ for the fiducial cross section, almost twice as large as for other tri-boson processes.

    hep-phJHEP(2024)·9 citations
14. 14*

    Four-loop two-mass tadpoles and the $\rho$ parameter

    Samuel Abreu🇨🇭 · Arnd Behring🇨🇭 · Andrew McLeod🇬🇧 · Ben Page🇨🇭

    We calculate four-loop QCD corrections to the electroweak $\rho$ parameter with a non-vanishing $b$ quark mass. At three loops, it was observed that elliptic integrals contribute to this observable. This prompts the question of which classes of functions appear at the next order. We report on the status of our calculation with a focus on the mathematical structures that emerge at four loops.

    hep-phPoS(2024)·3 citations
15. 15*

    Confining modeling of quark propagator

    A.E. Radzhabov🇷🇺 · X.L. Shang🇨🇳

    A confining extension of the quark model with nonlocal currents is proposed. The quark propagator is modified by introducing a cut in {\alpha}-space, which in momentum space corresponds to the subtraction of pole singularities. A two-phase phase structure is proposed for modeling the confinement-deconfinement phase transition. In the confined phase, the quark propagator does not have any pole singularities, while in the deconfined phase, there is a single quark pole.

    hep-phhep-thEPJC(2025)·2 citations
16. 16*

    Final state interactions for high energy scattering off atomic electrons

    Ryan Plestid🇺🇸 · Mark B. Wise🇺🇸

    We consider the scattering of high energy leptons off bound atomic electrons focusing primarily on final state interactions i.e., the exchange of virtual photons between the outgoing energetic electron, and the heavy residual charged "debris" in the final state. These effects are inherently absent from calculations for a free electron at rest. Coulomb exchanges are enhanced by the large number of electrons in the atomic debris, and are unsuppressed by non-relativistic velocities in the debris. We find that these exchanges can be resummed using operator methods, and cancel at the level of the cross section until at least $O({\alpha }^3)$. Furthermore, we argue that both final {\it and} initial state Coulomb exchanges (enhanced by the number of electrons in the atom) do not affect the cross section until at least $O({\alpha }^3)$. Transverse photon couplings to non relativistic electrons are proportional to their small velocities, and rotational invariance suppresses their contribution to $O({\alpha }^3)$. Our results are relevant for precision experiments involving neutrinos, electrons, positrons, and muons scattering off of atomic electrons in a fixed target.

    hep-phhep-exphysics.atom-phPRD(2024)·9 citations
17. 17*

    Simple high-accuracy method for solving bound-state equations with the Cornell potential in momentum space

    Alfred Stadler🇵🇹 · Elmar P. Biernat🇵🇹 · Vasco Valverde🇵🇹

    The well-known Cornell quark-antiquark potential in momentum space contains singularities both in its one-gluon-exchange (OGE) and linear confining parts, which prevents a direct use of the convenient Nyström method to solve the corresponding bound-state integral equation for the meson masses. While it has been known for a long time how the Coulomb-type singularity in the OGE potential can be treated with a subtraction technique, only very complicated methods have been developed to deal with the stronger singularity in the linear potential. In this work, we present a simple subtraction method to remove this singularity from the kernel, such that the Nyström method becomes applicable. Derivatives of the wave function, that appear as a result of the subtraction, are represented by means of interpolating functions, for which we found Lagrange polynomials to be very efficient. Test calculations show excellent agreement with exactly known energy eigenvalues. By increasing the number of integration points and the order of the Lagrange interpolation polynomials, extremely high accuracy can be achieved. This method can also be extended to relativistic Bethe-Salpeter type equations with singular kernels.

    hep-phnucl-thPRD(2024)·2 citations
18. 18*

    QCD axion, colour-mediated neutrino masses, and $B^{+}\to K^{+}+E_{\text{miss}}$ anomaly

    Chandan Hati🇪🇸 · Julio Leite🇪🇸 · Newton Nath🇪🇸 · José W. F. Valle🇪🇸

    Motivated by the recent Belle II result indicating a $2.7\sigma$ excess of $B^{+}\to K^{+}+E_{\text{miss}}$ events compared to the Standard Model (SM) prediction for $B^{+}\to K^{+}\nu \bar{\nu }$, we explore an explanation to this anomaly based on a KSVZ-type QCD axion model featuring a Peccei-Quinn (PQ) symmetry breaking at high-scale, that can provide a solution to the strong CP problem with dark matter relic abundance. The model contains a PQ-charged scalar} leptoquark which can interact with the SM quarks only via mass-mixing of the latter with vector-like quarks. The mixing between SM and vector-like quarks is determined by the PQ mass scales and can explain the excess $B^{+}\to K^{+}+E_{\text{miss}}$ events while respecting other flavour constraints. The same PQ-charged scalar leptoquarks and vector-like quarks also mediate the two-loop radiative neutrino masses.

    hep-phPRD(2025)·26 citations
19. 19*

    Exchange contribution to the variance of the excitation energy of the electron shell of the daughter atom in double-$\beta$ decay

    K. S. Tyrin🇷🇺 · M. I. Krivoruchenko🇷🇺

    The excitation of electron shell of a daughter atom in a neutrinoless double $\beta$-decay causes change in shape of the total energy peak of $\beta$ electrons at the end of the energy spectrum. The main parameters of the modified distribution are the average energy and variance of the excitation energy of the electron shell. We derive an expression for the variance taking into account exchange effects and make numerical estimates of the average excitation energy and variance based on the non-relativistic Roothaan-Hartree-Fock method and the relativistic Dirac-Hartree-Fock method implemented in the General Relativistic Atomic Structure Package (Grasp2018). Estimates are made for eleven isotopes, two-neutrino double-$\beta$ decay of which is observed experimentally. The results are determined by the first two negative moments of the electron radii in the parent atom. The values obtained for change in the peak shape can be used to parameterize the energy distribution of $\beta$ electrons, taking into account the excitation of the electron shell of the daughter atom.

    hep-phRuss.Phys.J.(2024)·0 citations
20. 20*

    Neutrino and antineutrino charged-current multi-nucleon cross sections revisited

    J. E. Sobczyk🇩🇪 · J. Nieves🇪🇸

    In this work we improve on several aspects of the computation of the (anti-)neutrino charged-current multi-nucleon cross section carried out in Phys.Rev.C 83 (2011) 045501 and Phys.Rev.C 102 (2020) 024601. Most importantly, we implement a consistent treatment of the nucleon self-energy in the $W^{\pm }N\to N^{\prime }\pi$ amplitude entering the definition of the two-particle two-hole (2p2h) cross-section, and estimate the source of uncertainty of our model due to a simplified treatment of the $\Delta$ self-energy. Our new predictions are around $20-40\%$ higher than previously. We show comparisons for the inclusive lepton double-differential cross sections, with no pions in the final state, measured by MiniBooNE on carbon and by T2K on carbon and oxygen. In all cases, we find an excellent reproduction of the experiments, and in particular, the neutrino MiniBooNE data is now well described without requiring a global $90\%$ re-scaling of the flux. In addition, we take the opportunity of this revision to discuss in detail several important issues of the calculation of the 2p2h cross section, delving into the microscopic dynamics of the multi-nucleon mechanisms. The improved treatment presented in this work provides realistic first-step emitted two-nucleon final state momentum configurations, beyond the approximation of phase-space distributions.

    ↳ nucl-thhep-phPRC(2025)·11 citations
21. 21*

    Weak rates in strongly coupled cold quark matter

    Carlos Hoyos🇪🇸 · Andrea Olzi🇮🇹 · David Rodriguez-Fernandez🇪🇸

    The rates of flavor-changing weak processes are crucial in determining the conditions of beta equilibrium in neutron stars and mergers, influencing the damping of oscillations, the stability of rotating pulsars, and the emission of gravitational waves. We derive a formula for these rates at nonzero temperature, to leading order in the Fermi coupling and exact in the QCD coupling. Utilizing a simple phenomenological holographic model dual to QCD, we study massless unpaired quark matter at high densities. We numerically compute the rate for small deviations from beta equilibrium and derive an analytic approximation for small temperatures. Our findings reveal that, compared to the perturbative result, the rate is suppressed by logarithmic factors of the temperature.

    ↳ nucl-thastro-ph.HEhep-phhep-thJHEP(2024)·6 citations
22. 22*

    Exploring atmospheric neutrino oscillations at ESSnuSB

    ESSnuSB: J. Aguilar🇪🇸 · M. Anastasopoulos🇸🇪 · E. Baussan🇫🇷 · A.K. Bhattacharyya🇸🇪 · A. Bignami🇸🇪 · M. Blennow🇸🇪 · M. Bogomilov🇧🇬 · B. Bolling🇸🇪 · E. Bouquerel🇫🇷 · F. Bramati🇮🇹 · A. Branca🇮🇹 · G. Brunetti🇮🇹 and 75 other authors

    This study provides an analysis of atmospheric neutrino oscillations at the ESSnuSB far detector facility. The prospects of the two cylindrical Water Cherenkov detectors with a total fiducial mass of 540 kt are investigated over 10 years of data taking in the standard three-flavor oscillation scenario. We present the confidence intervals for the determination of mass ordering, ${\theta }_{23}$ octant as well as for the precisions on ${\sin }^2{\theta }_{23}$ and $|\Delta m_{31}^2|$. It is shown that mass ordering can be resolved by $3\sigma$ CL ($5\sigma$ CL) after 4 years (10 years) regardless of the true neutrino mass ordering. Correspondingly, the wrong ${\theta }_{23}$ octant could be excluded by $3\sigma$ CL after 4 years (8 years) in the case where the true neutrino mass ordering is normal ordering (inverted ordering). The results presented in this work are complementary to the accelerator neutrino program in the ESSnuSB project.

    ↳ hep-exhep-phJHEP(2024)·9 citations
23. 23*

    Quantum Computing Universal Thermalization Dynamics in a (2+1)D Lattice Gauge Theory

    Niklas Mueller🇺🇸 · Tianyi Wang🇺🇸 · Or Katz🇺🇸 · Zohreh Davoudi🇺🇸 · Marko Cetina🇺🇸

    Simulating non-equilibrium phenomena in strongly-interacting quantum many-body systems, including thermalization, is a promising application of near-term and future quantum computation. By performing experiments on a digital quantum computer consisting of fully-connected optically-controlled trapped ions, we study the role of entanglement in the thermalization dynamics of a $Z_2$ lattice gauge theory in 2+1 spacetime dimensions. Using randomized-measurement protocols, we efficiently learn a classical approximation of non-equilibrium states that yields the gap-ratio distribution and the spectral form factor of the entanglement Hamiltonian. These observables exhibit universal early-time signals for quantum chaos, a prerequisite for thermalization. Our work, therefore, establishes quantum computers as robust tools for studying universal features of thermalization in complex many-body systems, including in gauge theories.

    ↳ quant-phhep-lathep-phnucl-thNature Commun.(2025)·60 citations
24. 24*

    TASI Lectures on Physics for Machine Learning

    Jim Halverson🇺🇸

    These notes are based on lectures I gave at TASI 2024 on Physics for Machine Learning. The focus is on neural network theory, organized according to network expressivity, statistics, and dynamics. I present classic results such as the universal approximation theorem and neural network / Gaussian process correspondence, and also more recent results such as the neural tangent kernel, feature learning with the maximal update parameterization, and Kolmogorov-Arnold networks. The exposition on neural network theory emphasizes a field theoretic perspective familiar to theoretical physicists. I elaborate on connections between the two, including a neural network approach to field theory.

    ↳ hep-thcs.LGhep-ph22 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.