Fri·Jan 16, 2026Friday·January 16, 2026

1. 01*

   Very-High-Frequency Gravitational Waves from Multi-Monodromy Inflation

   Guido D'Amico🇮🇹 · Andrew A. Geraci🇺🇸 · Nemanja Kaloper🇺🇸 · Alexander Westphal🇩🇪

   We show that in multi-stage axion monodromy inflation an interruption near the end of the penultimate stage can lead to a spike in the gravitational wave background. These gravitational waves are in the frequency range and with an amplitude accessible to proposed terrestrial detectors such as the Einstein Telescope, Cosmic Explorer, and future Levitated Sensor Detector experiments.

   hep-phastro-ph.COgr-qchep-th+1PRD(2026)·1 citation
2. 02*

   On Dispersive and Nondispersive K-matrix Formalisms

   Nils Hüsken🇩🇪 · Eric S. Swanson🇺🇸 · Adam Szczepaniak🇺🇸

   The modeling of coupled-channel effects has become increasingly important due to the availability of highly precise data for a large variety of hadronic (re)scattering processes. The K-matrix is a powerful, yet comparatively simple, method to describe scattering amplitudes, including coupled-channel effects, with the aim to interpret experimental data. Throughout the literature, a range of dispersive and nondispersive K-matrix methods are employed. Here, we compare the dispersive and nondispersive formulations in the context of the N/D method. It is shown that the methods are equivalent in the physical region under K-matrix reparameterization. Differences away from the physical region are examined. Applications to synthetic data are used to illustrate the effects of model choices concerning form factors and the application of dispersion relations, with the goal of clarifying best practices. We find no clear preference with regards to dispersive modeling. In contrast, we find that interpretational ambiguity of the bare model parameters -- and even of the form of the bare model -- is endemic, and recommend a thorough sampling of data and model spaces to assess conclusion robustness.

   hep-phhep-exPRD(2026)·0 citations
3. 03*

   Dirac mass matrix textures and the lightest right-handed neutrino mass scale in Type I seesaw leptogenesis

   Shuta Kosuge🇯🇵 · Teruyuki Kitabayashi🇯🇵

   The type I seesaw mechanism is one of the leading proposed explanations for how neutrinos acquire their tiny masses. However, the mass scale of the undiscovered right-handed neutrinos required by this mechanism remains undetermined. Assuming vanilla leptogenesis in the two-flavor regime, we work backwards to find the required general textures of the Dirac mass matrix from which we determine the mass of the lightest right-handed neutrino to be around $10^9\mathrm{GeV}$ to $10^{12}\mathrm{GeV}$.

   hep-phInt.J.Mod.Phys.A(2026)·0 citations
4. 04*

   Bulk viscosity of quark matter across the QCD phase transitions

   Chong-long Xie🇨🇳 · Guo-yun Shao🇨🇳 · Ming-zheng-xuan Wu🇨🇳 · Wei-bo He🇨🇳

   Based on the kinetic theory with relaxation time approximation, we investigate the bulk viscosity ($\zeta$) and its ratio to shear viscosity ($\zeta /\eta$) of quark matter at finite temperature and chemical potential with the in-medium particle masses derived in the 2+1 flavor Polyakov-loop improved Nambu--Jona-Lasinio (PNJL) model. We explore the behaviors of specific bulk viscosity ($\zeta /s$) and $\zeta /\eta$ across different QCD phase transitions, including the Mott phase transition, the chiral crossover, and the first-order transition with the associated metastable phase. The calculation shows that both $\zeta /s$ and $\zeta /\eta$ are extremely small at high temperatures, approaching the nature of a conformal theory. Larger $\zeta /s$ and $\zeta /\eta$ are derived near the chiral phase transition at finite temperature. Along the chiral crossover line, $\zeta /s$ and $\zeta /\eta$ generally increase with decreasing temperature, though $\zeta /\eta$ exhibits a slight decline near the critical endpoint (CEP). On the boundary of the first-order transition, $\zeta /s$ shows a non-monotonic variation with temperature. Furthermore, an additional peak structure emerges beyond the chiral phase boundary for both $\zeta /s$ and $\zeta /\eta$, with magnitudes even exceeding those near the chiral crossover of $u,d$ quarks. Our analysis indicates this peak originates from the chiral crossover transformation of strange quark.

   hep-phPRC(2026)·1 citation
5. 05*

   Physics-informed neural networks for angular-momentum conservation in computational relativistic spin hydrodynamics

   Hidefumi Matsuda🇨🇳 · Koichi Hattori🇨🇳 · Koichi Murase🇯🇵

   Theoretical developments in relativistic spin hydrodynamics, which describes the macroscopic transport of spin angular momentum alongside other fundamental conserved quantities, have progressed rapidly since the experimental observation of the global spin polarization of $\Lambda$ hyperons in relativistic heavy-ion collision experiments. However, numerical simulations of relativistic spin hydrodynamics remain largely unaddressed due to computational challenges, particularly the accurate numerical conservation of total angular momentum. In this work, we propose the use of physics-informed neural networks (PINNs) for computational relativistic spin hydrodynamics. As a concrete application, we consider a rotating fluid confined within a cylindrical container. We show that angular-momentum conservation can be accurately achieved in the PINNs-based numerical framework. Furthermore, we investigate the spin-orbit conversion induced by the rotational viscous effect, which is the intrinsic dissipative process of relativistic spin hydrodynamics. Our analysis numerically identifies the mismatch between the transverse thermal vorticity and the spin potential as the driving mechanism of the spin-orbit conversion.

   hep-phnucl-th0 citations
6. 06*

   Warm Hybrid Axion Inflation in $\alpha$-Attractor Models Constrained by ACT and Future Plan experiments

   Waqas Ahmed🇨🇳 · Waqar Ahmad · Ahsan Illahi🇵🇰 · M. Junaid🇵🇰

   We present a comprehensive study of warm hybrid inflation within the framework of $\alpha$-attractor models, where an axionic inflaton is coupled to a waterfall field in the presence of thermal dissipation. The model is analyzed for both linear (${\rm Y}\propto T$) and cubic (${\rm Y}\propto T^3$) dissipation regimes. Confronting the theoretical predictions with the latest observational data from Planck+BICEP/Keck, P-ACT-LB-BK18 and SPT, and , we find that in the weak dissipative regime ($Q_{\ast }\lesssim 10^{-5}$), the scalar spectral index $n_s\simeq 0.965$ lies at the boundary of the combined P-ACT-LB-BK18 constraints, while the tensor-to-scalar ratio $r$ remains within observable ranges. For stronger dissipation ($Q_{\ast }\gtrsim 10^{-5}$), the model predicts values of $n_s$ well within the $1$--$2\sigma$ confidence region of all datasets, with tensor modes remaining fully observable in both dissipation scenarios. These results indicate that forthcoming CMB polarization experiments may be capable of detecting primordial gravitational waves, thereby providing a robust observational test of warm hybrid inflation across different dissipative regimes.

   hep-phgr-qchep-thCPC(2026)·7 citations
7. 07*

   Physics with next generation neutrino experiments: ESSnuSB

   ESSnuSB: Monojit Ghosh🇭🇷

   In this proceedings we explore the physics potential of the ESSnuSBplus setup to study beam and non-beam based physics scenarios in both standard and new physics cases. The ESSnuSBplus setup consists of three neutrino sources: the main ESS linac, a low energy monitored neutrino beam and a low energy nuSTORM facility and three detectors: the main far detector and two near detectors. The goal of this facility is to measure the leptonic CP phase with extremely high precision and the neutrino nucleus cross-section in the few hundred MeV region.

   hep-phActa Phys.Polon.Supp.(2026)·1 citation
8. 08*

   Revealing Neutrino Mass Ordering at CEPC and FCC-ee

   Wei Liu🇨🇳 · Supriya Senapati🇨🇳 · Jin Sun🇰🇷

   The neutrino masses ordering remains one of the most important open questions in neutrino physics. While upcoming oscillation experiments aim to resolve this problem at low energies, complementary approaches are highly desirable. In this Letter, we show that the neutrino mass ordering can be probed at high-energy colliders through the lepton-flavor structure of heavy neutral lepton (HNL) interactions. In the minimal Type-I seesaw scenario with two nearly degenerate HNLs, the heavy--light neutrino mixings are strongly correlated with the light-neutrino mass spectrum, leading to distinct flavor patterns for the normal and inverted hierarchies. We demonstrate that future $Z$ factories, such as CEPC and FCC-ee, can probe the neutrino mass ordering for total HNL mixings as small as $U_{\mathrm{tot}}^2\gtrsim 4\times 10^{-9}$, and discriminate between the two hierarchies for $U_{\mathrm{tot}}^2\gtrsim 10^{-6}$. Our results establish collider searches for HNLs as a powerful and complementary probe of the neutrino mass ordering.

   hep-phPRD(2026)·1 citation
9. 09*

   Flavour hierarchies from radiative corrections in latticed theory space

   Gurucharan Mohanta🇮🇳 · Ketan M. Patel🇮🇳

   It has recently been shown that when $N_f$ generations of chiral fermions are coupled in a specific manner to $N$ (with $N\ge 2N_f-1$) pairs of vectorlike fermions whose mass terms form a one-dimensional lattice-like structure in theory space, locality along the lattice ensures that only a single fermion generation acquires a mass at tree level. Radiative corrections can induce controlled departures from locality in the latticed space, thereby generating suppressed but non-vanishing masses for the remaining $N_f-1$ generations. In this work, we present an explicit implementation of this mechanism to address the flavour hierarchies of the Standard Model. After delineating the minimal extensions of the gauge, scalar, and Yukawa sectors required for feasible implementation of the mechanism, we demonstrate that the framework successfully reproduces the observed charged-fermion mass spectrum and quark mixing pattern. We analyse the new-physics effects arising from the extended sectors and confront them with existing constraints from direct, indirect searches and precision measurements. It is shown that a viable realisation of the mechanism allows the spectrum of vectorlike fermions and additional gauge boson to lie at scales as low as $\mathcal{O}(5)\mathrm{TeV}$ with the lightest states typically corresponding to top partners. This stands in sharp contrast to conventional radiative mass-generation scenarios, in which phenomenological constraints typically impose a lower bound on the new-physics scale of order a few hundred to several thousand TeV.

   hep-phhep-thJHEP(2026)·1 citation
10. 10*

    Two-Loop DGLAP Splitting Functions from Light Cone Perturbation Theory

    Tuomas Lappi🇫🇮 · Risto Paatelainen🇫🇮 · Mikko Seppälä🇫🇮

    We perform a two-loop calculation in Light Cone Perturbation Theory (LCPT) to evaluate the next-to-leading order nonsinglet splitting function. Our calculation demonstrates the methodology and feasibility of performing higher order calculations in LCPT. Since in Hamiltonian perturbation theory the longitudinal $k^{+}$ momentum is always positive, poles in $1/k^{+}$ can be regularized by a simple cutoff which cancels in physical results, without any associated ambiguities. For transverse momentum integrals we use dimensional regularization. Developing methods for loop calculations in LCPT paves the way for a systematical, automatizable procedure for precision calculations in this framework with a transparent physical partonic interpretation. This can provide a standard framework in higher order calculations in the gluon saturation regime of QCD.

    hep-phnucl-thJHEP(2026)·2 citations
11. 11*

    On the reconstruction of kinematic distributions computed with Monte Carlo methods using orthogonal basis functions

    Kirill Melnikov🇩🇪 · Ivan Novikov🇩🇪 · Ivan Pedron🇩🇪

    Reconstruction of one-dimensional kinematic distributions from calculations based on high-dimensional Monte-Carlo integration is a standard problem in high-energy physics. Traditionally, this is done by collecting randomly-generated events in histograms. In this article, we explore an alternative approach, whose main idea is to approximate the target distribution by a weighted sum of orthogonal basis functions whose coefficients are calculated using the Monte-Carlo integration. This method has the advantage of directly yielding smooth approximations to target distributions. Furthermore, in the context of high-order perturbative calculations with local subtractions, it eliminates the so-called bin-to-bin fluctuations, which often severely affect the quality of conventional histograms. We also demonstrate that the availability of a high-quality approximation to the target distribution, for example the leading-order result in the perturbative expansion, can be exploited to construct an optimized orthonormal basis. We compare the performance of this method to conventional histograms in both toy-model and real Monte-Carlo settings, applying it to Higgs boson production in weak boson fusion as an example.

    hep-phSciPost Phys.Core(2026)·0 citations
12. 12*

    Combined analysis of the singly-Cabbibo-suppressed decays of $D^0\to VP$

    Jun Wang🇨🇳 · Qiang Zhao🇨🇳

    We investigate six singly Cabibbo-suppressed decay channels in $D^0\to VP$ ( $V$ and $P$ stand for the ground state vector and pseudoscalar mesons, respectively), i.e. $D^0\to {\rho }^{+}{\pi }^{-}$, ${\rho }^{-}{\pi }^{+}$, $K^{\ast +}{K}^{-}$, $K^{\ast -}{K}^{+}$, $K^{\ast 0}{\bar{K}}^0$, and ${\bar{K}}^{\ast 0}{K}^0$. These decay channels share the similar transition mechanisms involving only the direct emission (DE) and internal conversion (IC) processes. We show that a combined analysis of these channels can explicitly highlight the role played by the IC processes which contribute to the amplitudes at the same order of magnitude as the DE processes.

    hep-ph2 citations
13. 13*

    Massless-Massive Amplitude Correspondence I: Helicity-chirality Matching and On-shell Higgsing

    Yu-Han Ni🇨🇳 · Chao Wu🇨🇳 · Jiang-Hao Yu🇨🇳

    In this work, the massless-massive correspondence for the on-shell scattering amplitudes is constructed so the massive amplitudes could inherit advantageous techniques developed in the massless calculation. This correspondence is established by matching massless amplitudes to Minimal Helicity-Chirality (MHC) amplitudes, which arise from an expansion of massive spin-spinor amplitudes in terms of the chirality-flip $m\eta$ order by order. The primary MHC amplitude deforms into a massless amplitude of the same helicity; if a vector boson is involved, it may instead vanish due to the associated conserved current. In cases where the primary amplitude vanishes, the leading contributions originate from descendant MHC amplitudes, each corresponding to a distinct massless amplitude in the ultraviolet theory containing either a transverse gauge boson or a Goldstone boson. We propose a systematic amplitude deformation procedure for three-point massless-massive matching based on helicity-chirality unification and the scaling properties of $m\eta$. Sub-leading MHC amplitudes are matched to massless amplitudes with additional on-shell Higgs splitting, a process known as on-shell Higgsing. In this work, we extend and reinterpret on-shell Higgsing as a transversality flip between different MHC states, and obtain all the 3-point massless-massive matching results in the spontaneous broken standard model.

    hep-phhep-th2 citations
14. 14*

    Massless-Massive Amplitude Correspondence II: Constructive Massive Amplitudes in Standard Model

    Yu-Han Ni🇨🇳 · Chao Wu🇨🇳 · Jiang-Hao Yu🇨🇳

    In the minimal helicity-chirality formalism, we systematically construct higher-point massive amplitudes from the fundamental building blocks: the contact three-point and four-point massive amplitudes. The inclusion of four-point contact amplitudes is essential to maintain gauge invariance in the spontaneously broken Standard Model. We construct all the standard model massive contact amplitudes and identify the physical light-cone gauge nature of massive amplitudes. Then only using the contact minimal helicity-chirality amplitudes at the leading order, we show both bootstrap techniques and on-shell recursion relations can be utilized to compute higher-point massive amplitudes. This provides a systematic framework for constructing various higher-point electroweak amplitudes, analogous to established on-shell methods for massless theories. Finally by deforming the gauge-invariant $n$-point amplitudes, we extend the massless-massive correspondence from three-and-four point contact amplitudes to general $n$-point factorized amplitudes.

    hep-phhep-th2 citations
15. 15*

    Medium-Induced Quarkonium Dissociation at Finite Chemical Potential and Weak Magnetic Field

    Indrani Nilima🇮🇳 · Mujeeb Hasan🇮🇳 · Mohammad Yousuf Jamal🇨🇳 · Salman Ahamad Khan🇮🇳 · B. K. Singh🇮🇳

    We investigate the in-medium modification and dissociation of heavy quarkonium in a hot QCD medium at finite quark chemical potential and in the weak magnetic-field regime. Starting from the one-loop resummed gluon propagator in the imaginary-time formalism, and incorporating non-perturbative effects through a phenomenological correction to the HTL description, we compute the real and imaginary parts of the dielectric permittivity. This, in turn, leads to a complex heavy-quark potential: the real part is used to determine binding energies by solving the nonrelativistic Schrödinger equation, while the imaginary part generates thermal decay widths, dominated by Landau damping. Within the explored parameter range, temperature has the greatest control over Debye screening, potential modification, and quarkonium stability, whereas finite density and weak magnetic fields introduce comparatively smaller quantitative changes. As the temperature increases, binding energies decrease and thermal widths grow, giving rise to the expected hierarchy between ground and excited states and a sequential suppression pattern in the dissociation temperatures. Overall, our results indicate that while finite chemical potential and weak magnetic fields can shift quarkonium properties in a measurable way, thermal effects remain the primary driver of dissociation, with direct relevance for heavy-ion collision phenomenology.

    hep-phnucl-thPRD(2026)·0 citations
16. 16*

    Narrowing Down Sources of High-Frequency Gravitational Waves

    Asher Berlin🇺🇸 · Dawid Brzeminski🇺🇸 · Erwin H. Tanin🇺🇸

    Detecting gravitational waves above 100 kHz would constitute a major discovery, as any observable signal would have to arise from new physics within the late universe. Although many technologies have been identified to explore this high-frequency regime, the known landscape of promising sources remains extremely sparse. In this work, we aim to rectify this issue by providing model-independent arguments that highlight the most interesting parts of theory space, while remaining agnostic of the specific signal mechanism. For example, energy-conservation implies that gravitational waves detectable by future experiments well above a MHz would most likely have to originate from within the Solar System. Based on these arguments, we also constrain the physical properties of such sources.

    hep-phgr-qchep-exPRD(2026)·5 citations
17. 17*

    Dark energy driven by an oscillating generalised axion-like quintessence field

    Mariam Bouhmadi-López🇪🇸 · Carlos G. Boiza🇪🇸

    Generalised axion-like scalar fields provide a well-motivated framework for describing the late-time acceleration of the Universe. As the field evolves, it rolls down its potential and, depending on its mass and initial conditions, it may either still be approaching the minimum or already oscillating around it. These two dynamical regimes require distinct treatments of cosmological perturbations. In this work, we perform a detailed analysis of linear cosmological perturbations in the regime where the dark-energy scalar field undergoes coherent oscillations about the minimum of its potential. We show that the standard effective fluid description breaks down in this phase and develop a consistent field-based perturbation framework, which we use to assess the impact of oscillatory dark energy on the growth of cosmic structures.

    ↳ astro-ph.COgr-qchep-phhep-thPRD(2026)·1 citation
18. 18*

    The collectivity of transverse momentum fluctuations

    Tribhuban Parida🇮🇳 · Rupam Samanta🇵🇱 · Jean-Yves Ollitrault🇫🇷

    We study the observable $v_0(p_T)$, which quantifies the relative change of $p_T$ spectra induced by event-by-event density fluctuations in the medium created in heavy-ion collisions. This quantity provides a direct measure of radial flow and serves as a probe of collectivity, complementing anisotropic flow coefficients. Using hydrodynamic model calculations, we predict the behavior of $v_0(p_T)$ and show that the scaled quantity $v_0(p_T)/v_0$ exhibits very little dependence on centrality and transport coefficients. We further find that the apparent influence of transport coefficients$-$particularly bulk viscosity$-$ on $v_0(p_T)$ largely originates from modifications of the event-averaged mean transverse momentum, $⟨p_T⟩$. By expressing $v_0(p_T)/v_0$ as a function of $p_T/⟨p_T⟩$, the genuine sensitivity of $v_0(p_T)$ to transport coefficients can be isolated. Moreover, since $v_0(p_T)$ is the $p_T$-differential measure of event-by-event $[p_T]$ fluctuations, it naturally explains the observed $p_T$-cut dependence of ${\sigma }_{p_T}$ measured by ATLAS collaboration.

    ↳ nucl-thhep-phnucl-exEPJ Web Conf.(2026)·0 citations
19. 19*

    Minimally Truncated SU(3) Lattice Gauge Theory and String Tension

    Vincent Chen🇺🇸 · Berndt Müller🇺🇸 · Xiaojun Yao🇺🇸

    We study SU(3) gauge theory on small lattices in the minimal (qutrit) electric field truncation retaining only the $1,3,\overline{3}$ representations for the link variables. Explicit expressions are given for the Kogut-Susskind Hamiltonian for the square plaquette chain and the two-dimensional honeycomb lattice. Our formalism can be easily extended to the minimally truncated general SU($N_c$) gauge theory. The addition of (static) quarks is discussed. We present results for the energy spectrum of the gauge field on these lattices by exact diagonalization of the Hamiltonian and analyze its statistical properties. We also compute the SU(3) string tension and discuss how it is modified by vacuum fluctuations. Finally, we calculate the potential energies of a static quark-antiquark pair and three static quarks and study their screening at finite temperature.

    ↳ hep-lathep-phhep-thquant-ph8 citations
20. 20*

    Rapid post-merger gravitational-wave signals from magnetic black hole superradiance: novel approach to detect magnetic monopole and ultralight boson

    Zhong-Hao Luo🇨🇳 · Fa Peng Huang🇨🇳 · Pengming Zhang🇨🇳 · Chen Zhang🇨🇳

    We present an analytic framework showing that a spinning black hole with net magnetic charge exhibits a greatly enhanced superradiant instability against charged scalar fields compared with the neutral Kerr case. The enhancement arises from the monopole-induced reduction of the centrifugal barrier, $\ell (\ell +1)\to \ell (\ell +1)-q^2$, encoded by an effective quantum number ${\ell }_q$, with $q=eP=N/2$ fixed by Dirac quantization. This deepens the bound-state potential well and increases the instability growth rate. The resulting cloud can source near-monochromatic continuous gravitational waves (GWs). For a charged complex scalar, the stress tensor of a single monopole-harmonic sector is stationary, so the leading $2\omega$ GW source instead arises from coherent north--south, equivalently charge-conjugate, cross terms. These select $(\tilde{\ell },\tilde{m},\tilde{\omega })=(2q,+2q,+2\omega )$ and its conjugate $(2q,-2q,-2\omega )$. We find $P_{\mathrm{GW}}\propto (E_N{E}_S/M^2){\alpha }^{4{\ell }_q+8}$, or $P_{\mathrm{GW}}\propto (E_c/M{)}^2{\alpha }^{4{\ell }_q+8}$ for a balanced cloud, rather than the neutral-Kerr scaling ${\alpha }^{4\ell +10}$. This motivates prompt post-merger searches for magnetic monopoles and ultralight bosons. Unlike the Kerr case, where the signal turn-on may be delayed by years to centuries, a magnetic remnant can form a cloud and emit a stronger continuous signal within weeks to months. For $M\sim 10^6{M}_{\odot }$, the signal can appear within weeks in the mHz band with strain $h\sim 10^{-20}$.

    ↳ gr-qchep-ph1 citation
21. 21*

    Energy Correlators in Warped Geometries

    Lorenzo Ricci🇺🇸 · Raman Sundrum🇺🇸

    We study Energy Correlators as probes of strongly-coupled nearly-conformal field theories within their holographically dual descriptions, focusing on the important features that appear in realistic theories going beyond the standard model. In particular, we study warped geometries which asymptote to ${\text{AdS}}_5$, as well as IR-truncations dual to a 4D gap. Our correlators are computed by in-in type Witten perturbative diagrams, corresponding to a large-N expansion of the strong dynamics. We describe how this sets the stage for phenomenological applications for collider searches beyond the standard model as well as for new theoretical explorations in Lorentzian holography.

    ↳ hep-thhep-phPRD(2026)·1 citation
22. 22*

    The Effective Theory of Muon-to-Electron Conversion

    W. C. Haxton🇺🇸 · Evan Rule🇺🇸

    We summarize recent work to develop an effective theory of muon-to-electron conversion, based on a complete set of low-energy effective operators that are developed from a systematic expansion in velocities and momenta. The expansion effectively factors rates into sums of particle physics and nuclear physics terms, where the former are expressed as bilinears in the LECs (the low-energy constants of the effective theory) and the latter are the associated nuclear responses. One can view the nuclear responses as ``dials" that can be adjusted -- for example, by selection of targets with specific properties -- in order to isolate the former. We show that an important dial, in the case of Mu2e and COMET, will be inelastic transitions to certain low-energy nuclear states that are resolvable in 27Al. If these transitions are exploited, the experiments have the potential not only to discover charged lepton flavor violation (CLFV), but to determine the operators responsible for the CLFV. We also discuss how such low-energy results can be ``ported" to higher energies through a tower of matched EFTs, so they can be combined with other experimental limits to further constrain CLFV

    ↳ nucl-thhep-exhep-phnucl-ex0 citations
23. 23*

    The gravitational wave landscape of cosmic string networks with varying tension

    Luca Brunelli🇮🇹 · Filippo Revello🇧🇪 · Gonzalo Villa🇬🇧

    We fully classify the phenomenology of gravitational wave emission from scaling cosmic string networks with varying tension and compute the spectral indices of the resulting stochastic backgrounds. In string compactifications, periods of varying tension occur when moduli acquire a time-dependence. We present concrete examples in type IIB string theory as D3- and NS5- branes wrapping internal cycles, which become dynamical due to the effect of moduli potentials. Moreover, we use Swampland constraints to derive general bounds on the allowed time-variation of the effective string tension in FLRW backgrounds and on the resulting spectral indices.

    ↳ hep-thastro-ph.COhep-phPRD(2026)·2 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.