HEP Phenomenology·hep-ph

Thu·Aug 21, 2025Thursday·August 21, 2025

24 papers—18 primary·6 cross-listed·reconstructed*

01*
The role of the pion mass on the QCD phase diagram in the $T - e B$ plane
Chowdhury Aminul Islam🇩🇪 · Mahammad Sabir Ali🇮🇳 · Rishi Sharma🇮🇳
We investigated the role of the pion mass on the QCD phase diagram in the $T - e B$ plane using an effective model treatment. Such treatments are able to capture the main features predicted by first-principles calculations. We also employed the model to estimate the pion mass beyond which the inverse magnetic catalysis (IMC) effect disappears. The value is found to be independent of the strength of the magnetic field.
hep-phhep-latnucl-thJ.Subatomic Part.Cosmol.(2025)·0 citations
02*
Precise Predictions for Event Shapes in Hadronic Higgs Decays
Elliot Fox🇬🇧 · Aude Gehrmann-De Ridder🇨🇭 · Thomas Gehrmann🇨🇭 · Nigel Glover🇬🇧 · Matteo Marcoli🇬🇧 · Christian T. Preuss🇩🇪
We present NNLO QCD predictions for a wide range of event-shape observables in hadronic Higgs decays, taking into account the two dominant decay modes $H \to g g$ and $H \to b b ˉ$ . Specifically, we consider the six classical event shapes thrust, heavy jet mass, $C$ -parameter, total and wide jet broadening, and the three-jet resolution $y_{23}$ in the Durham algorithm. We also present results for the soft-drop variant of thrust. Decays of the Higgs boson to two gluons are treated in the heavy-top limit, whereas decays to a bottom-quark pair are mediated by a non-vanishing Yukawa coupling, despite considering kinematically massless quarks. Our results highlight the importance of NNLO QCD corrections in the calculation of event-shape observables and provide means to quantify the intrinsic difference between the two Higgs decay modes.
hep-phJHEP(2025)·6 citations
03*
Once-in-a-lifetime encounter models for neutrino media II: Quasi-steady states and miscidynamic flavor evolution
Anson Kost (UNM)🇺🇸 · Lucas Johns (LANL)🇺🇸 · Huaiyu Duan (UNM)🇺🇸
We extended the once-in-a-lifetime encounter (OILE) model to stochastic interactions among neutrinos. As in the original OILE model, the new model reproduces the mean-field behavior of a dense neutrino gas for time $t ≲ (μ γ)^{- 1}$ , where $μ$ measures the strength of the mean-field neutrino self-interaction potential and is proportional to the neutrino density, and the dimensionless "impact parameter" $γ$ is a measure of the change in the flavor quantum state of a neutrino during interaction with another neutrino when the wave packets of the two neutrinos overlap. As in the mean-field case, the OILE model with random neutrino velocities experiences kinetic flavor decoherence as the flavor quantum states of the neutrinos diverge from each other. Unlike the mean-field case, however, the OILE model has a "collision term" due to the quantum entanglement among neutrinos. For $γ ≪ 1$ , this incoherent effect can drive the neutrinos into a quasi-steady state that is similar to the collective precession mode in a homogeneous and isotropic neutrino gas in the mean-field approximation. Subsequently, the collision term drives the neutrino gas adiabatically through different quasi-steady states and eventually to flavor equilibration. This process is an example of miscidynamic flavor evolution, with the mixing equilibria being the quasi-steady precession states.
hep-phastro-ph.HEPRD(2025)·7 citations
04*
NLO Corrections to Dimuonium Production in Photon-Photon Collision
Qi-Ming Feng🇨🇳 · Si-Mao Guo🇨🇳 · Qi-Wei Hu🇨🇳 · Cong-Feng Qiao🇨🇳 · Qi-Ming Qiu🇨🇳 · Yu-Jie Tian🇨🇳 · Bai-Rong Zhang🇨🇳 · Hao Zhang🇨🇳 · Xuan-Heng Zhang🇨🇳 · Bo-Ting Zhou🇨🇳
Dimuonium ( $μ^{+} μ^{-}$ ) is one of the pure QED bound systems of leptons, together with positronium and ditauonium. The former had been observed in experiment in 1951, while the search for dimuonium and ditauonium ( $τ^{+} τ^{-}$ ) are still in vain. The ditauonium is thought to be hard to measure due to its short life time, whereas the dimuonium is very likely to be observed in current running experiments. We calculate in this work the para and ortho dimuonium production in photon-photon collision at the next-to-leading order (NLO) in QED. To handle the Coulomb divergence within the bound system, the non-relativistic QED description is adopted for consistency. The results indicate that the NLO corrections are negative for both para and ortho states, at the normal order of perturbative QED corrections. The measurement of the dimuonium in Belle II experiment, especially at the forthcoming facility of STCF, is tenable.
hep-phPRD(2025)·3 citations
05*
Axion Star Bosenova in Axion Miniclusters
Zihang Wang🇨🇳 · Yu Gao🇨🇳
Axionic dark matter can form structures known as miniclusters that host an axion star at their center. The axion star feeds on the host, and the axion star mass may grow beyond its stability limit, leading to a potential bosenova. Since a dilute axion star has a stable mass limit only when self-interaction is considered, we include axion self-interaction effects in this paper, and specify the condition for bosenova in the QCD axion and temperature-independent axion-like particle parameter spaces. We find that self-interaction may dominate the mass growth of the axion star. For a minicluster with a large initial overdensity, bosenova occurs in a large fraction of axion parameter space. For the QCD axion, bosenova occurs within the age of the Universe for miniclusters with an initial overdensity $δ ≳ 100$ .
hep-phastro-ph.HEPhys.Dark Univ.(2026)·4 citations
06*
Impact of new measurements of light quarks at hadron colliders
Zihan Zhao🇨🇳 · Minghui Liu🇨🇳 · Liang Han🇨🇳
Recently a series of new measurements with both the neutral and charge current Drell--Yan processes have been performed at hadron colliders, showing deviations from the predictions of the current parton distribution functions (PDFs). In this article, the impact of these new measurements is studied by using their results to update the PDFs. Although these new measurements correspond to different boson propagators and colliding energies, they are found to have a similar impact to the light quark parton distributions with the momentum fraction $x$ around 0.1. It manifests that the deviations are consistent with each other and favor a larger valence $d_{v} / u_{v}$ ratio than the modern PDF predictions. Further study indicates that such tension arises dominantly from the deep inelastic scattering measurements of NMC and the fixed target experiments of NuSea, both of which play pivotal roles in detecting the relative $u$ and $d$ type quark contributions for modern PDFs. According to the conclusions of the impact study, it would be essential to include these new measurements into the complete PDF global analysis in the future.
hep-phCPC(2026)·0 citations
07*
Identifying Monochromatic Signals in LISA and Taiji via Spectral Split: Gravitational Waves versus Ultralight Dark Matter
Yue-Hui Yao🇨🇳 · Tingyuan Jiang🇨🇳 · Wenyan Ren🇨🇳 · Di Chen🇨🇳 · Yong Tang🇨🇳 · Yu-Feng Zhou🇨🇳
The detection of gravitational waves (GWs) has opened a new window to explore the dark Universe. Ultralight dark matter (ULDM), an attractive candidate for dark matter, might induce monochromatic signals in gravitational-wave (GW) laser interferometers. However it is not clear how such signals are disentangled from the GWs emitted by galactic compact binaries. Here we initiate the investigation on the spectral split of monochromatic signals caused by detector's heliocentric motion in space and show the annual modulation can induce distinct structures in the spectral harmonics for GWs and ULDM, which would enable to clearly identify the nature of the signal. We show the physical parameters can be inferred with high precision using the Fisher matrix formalism. Our results provide a practical algorithm for probing ULDM and broaden the scientific objectives of future GW detectors in space, such as LISA and Taiji.
hep-phastro-ph.COgr-qc5 citations
08*
Jets at electron-positron colliders
Giovanni Stagnitto🇮🇹
We provide a pedagogical introduction to the physics of hadronic jets and event shapes at electron-positron colliders. We present some of the main jet definitions and event shape observables studied at lepton colliders and discuss how to produce theoretical predictions in perturbative quantum chromodynamics (QCD), both at fixed order and with resummation or parton showers. We further introduce important topics in jet substructure that have seen developments in a lepton collider environment, such as the Lund jet plane, Soft Drop, and quark-gluon jet discrimination. Finally, we briefly elaborate on selected topics, such as flavoured jets, hadronic decays of the Higgs boson, and non-perturbative effects.
hep-phhep-ex8 citations
09*
Scrutinizing Fermionic Dark Matter in Scotogenic Model with Low Reheating Temperature
Abhishek Roy🇰🇷 · Rameswar Sahu🇮🇳
The scotogenic model provides a minimal and elegant framework that simultaneously explains neutrino masses and accommodates a viable dark matter (DM) candidate. In this work, we investigate the phenomenology of fermionic DM in the scotogenic model, with a particular emphasis on the effects of a non-standard cosmological history characterized by a low reheating temperature. We demonstrate that entropy injection from inflaton decay can significantly dilute the DM abundance, thereby relaxing the annihilation cross section required to reproduce the observed relic density and opening new regions of viable parameter space. We further analyze the complementarity between current and future direct detection experiments and charged lepton flavour violation (cLFV) searches in probing this scenario. Our results show that next-generation direct detection experiments such as DARWIN and XLZD, together with upcoming cLFV searches (in particular the future sensitivity of $μ \to 3 e$ and $μ \to e$ conversion experiments), will be capable of testing substantial regions of the parameter space, including those associated with low reheating temperatures.
hep-phastro-ph.COastro-ph.HEJCAP(2026)·6 citations
10*
Solar wind bremsstrahlung in our Solar System at 21cm, 3mm, and 12microns Wavelengths
Gilles Couture🇨🇦
Using Monte Carlo techniques, we calculate the bremsstrahlung spectrum that protons and electrons in the solar wind would produce when encountering dark matter (DM) particles within the solar system. We consider two types of interactions for the DM: one where a spin-1/2 neutral DM particle interacts with matter through the exchange of a lighter neutral scalar DM particle and one where a scalar neutral DM particle interacts directly with the matter particle. We consider three wavelengths: 21 cm, 3 mm, and 12 microns. In order to estimate the significance of the signal, we compare our results to experimental results from ARCADE2 and PLANCK, and consider the sensitivities of three telescopes: VLA, ALMA and KECK. We find that in order to produce an observable signal in the first scenario, the neutral fermion must have a mass comparable to the solar wind particle while the exchanged particle must have a mass typically $f e w \times 1 0^{5}$ smaller. The scalar direct interaction however appears beyond reach for any reasonable coupling.
hep-phPRD(2025)·0 citations
11*
Nonstrange and strange quark matter at finite temperature within modified NJL model and protoquark stars
Wen-Li Yuan🇨🇳 · Nobutoshi Yasutake🇯🇵 · Renxin Xu🇨🇳
We extend the modified Nambu-Jona-Lasinio (NJL) model -- incorporating exchange interactions via the Fierz transformation -- to finite temperatures in both two- and three-flavor scenarios, and investigate the properties of protoquark stars in $β$ -equilibrium. Our results show that increasing the strength of exchange interactions, characterized by the parameter $α$ , changes the chiral phase transition from first-order to crossover. We examine the effects of finite temperature, lepton fraction, and exchange interactions on the equation of state (EOS). We find that, in the crossover regime, the EOS is significantly stiffer than in the first-order case due to the substantial contribution of repulsive interactions in the exchange channels, while it remains relatively insensitive to variations in temperature and lepton fraction. Imposing the thermodynamic consistency, which requires the minimum of free energy per baryon $f / ρ_{B}$ occurs at zero pressure, further constrains the minimum value of vacuum pressure.
hep-phastro-ph.HEPRD(2026)·3 citations
12*
Novel Limits on Dark Photon Mixing from Radiation Safety
Wen Yin🇯🇵
I propose a novel laboratory search for dark photons based on radiation-safety monitoring at synchrotron radiation facilities, including NanoTerasu, SPring-8, KEK-PF, and ESRF. Dark photons can be produced parasitically in undulators or via photon-mirror interactions, and subsequently traverse optical systems and shielding. Taking into account quantum effects and the internal structure of undulators, mirrors, and detectors, I show that even a simple Geiger-Müller counter, routinely used for radiation-safety monitoring, can detect such dark photons outside the shielding and set competitive limits on the kinetic mixing parameter down to $χ ≲ 5 \times 1 0^{- 6}$ in the eV mass range, providing some of the strongest bounds among laboratory searches. Because radiation safety is strictly regulated, the resulting limits can be regarded as robust and realistic constraints.
hep-phhep-exphysics.ins-detPRL(2026)·4 citations
13*
Lorentz-Equivariance without Limitations
Luigi Favaro🇧🇪 · Gerrit Gerhartz🇩🇪 · Fred A. Hamprecht🇩🇪 · Peter Lippmann🇩🇪 · Sebastian Pitz🇩🇪 · Tilman Plehn🇩🇪 · Huilin Qu🇨🇭 · Jonas Spinner🇩🇪
Lorentz Local Canonicalization (LLoCa) ensures exact Lorentz-equivariance for arbitrary neural networks with minimal computational overhead. For the LHC, it equivariantly predicts local reference frames for each particle and propagates any-order tensorial information between them. We apply it to graph networks and transformers. We showcase its cutting-edge performance on amplitude regression, end-to-end event generation, and jet tagging. For jet tagging, we introduce a large top tagging dataset to benchmark LLoCa versions of a range of established benchmark architectures and highlight the importance of symmetry breaking.
hep-phhep-ex21 citations
14*
Multi-top signals of vectorlike quarks at the LHC
Elias Bernreuther🇺🇸 · Bogdan A. Dobrescu🇺🇸
We point out that events with 6 or more top quarks may be observed at the LHC if certain particles exist at the TeV scale. In a model where a vectorlike quark of charge 2/3 decays into a top quark and a pseudoscalar particle, which subsequently decays into a top-antitop pair, the LHC production cross section for events with 6 top quarks may be above 10 fb. If the pseudoscalar is part of a complex scalar field, then longer cascade decays, involving the scalar partner, may lead to events with 8 or even 10 top quarks. We show that for a region of parameter space the dominant LHC signal in this model is 8 top quarks (i.e., four $t t ˉ$ pairs). The ensuing signals would be spectacular, including many leptons and $b$ jets. A discovery in that case would allow several cross section measurements that may determine the masses of all three new particles.
hep-phhep-exJHEP(2025)·2 citations
15*
Complete NLO SMEFT Electroweak Corrections to Higgs Decays
Luigi Bellafronte🇺🇸 · Sally Dawson🇺🇸 · Clara Del Pio🇺🇸 · Matthew Forslund🇺🇸 · Pier Paolo Giardino🇪🇸
Precise predictions for Higgs decays are a crucial ingredient of the search for beyond the Standard Model (BSM) physics and the Standard Model Effective Field Theory (SMEFT) is a valuable tool for quantifying deviations from the Standard Model (SM). We present the complete set of predictions for the 2- and 3- body Higgs decays at next-to-leading order (NLO), considering QCD and electroweak corrections and including all contributions from the dimension-6 SMEFT operators and with an arbitrary flavor structure. Including the NLO SMEFT results for Higgs decays greatly increases the sensitivity to BSM physics of the $e^{+} e^{-} \to Z h$ process at FCC-ee, as compared with that obtained using only the total cross section.
hep-phPRL(2026)·12 citations
16*
One Phase to Rule Them All: Spontaneous CP Violation and Leptogenesis in SO(10)
K.S. Babu🇺🇸 · Chee Sheng Fong🇧🇷 · Shaikh Saad🇸🇮
We present a renormalizable $S O (10)$ grand unified theory with a minimal Yukawa sector consisting of a $12 6_{H}$ , a real $1 0_{H}$ and a real $12 0_{H}$ , where $C P$ violation has a spontaneous origin. We show that the Yukawa sector in this setup, which consists of only 19 real parameters, is capable of simultaneously reproducing the observed fermion masses and mixings, including neutrino oscillations, as well as the baryon asymmetry of the Universe via thermal leptogenesis. In this framework, $C P$ is spontaneously broken when a $C P$ -odd Higgs field $5 4_{H}$ , used for GUT symmetry breaking, acquires a non-zero vacuum expectation value. All $C P$ -violating phases, including the Dirac phases $δ_{CKM}$ and $δ_{PMNS}$ , the neutrino Majorana phases, as well as those responsible for leptogenesis, arise solely from a single complex parameter in the Higgs potential. The proposed minimal setup predicts a normal ordering of neutrino masses, with the atmospheric mixing angle $θ_{23}$ preferred in the first octant and the leptonic $δ_{PMNS}$ lying in the range $(- 3 8^{\circ}, + 3 1^{\circ})$ . The fermion fits in our scenario further yield a strongly hierarchical mass spectrum for the three right-handed neutrinos, $(M_{1}, M_{2}, M_{3}) \sim (1 0^{5}, 1 0^{12}, 5 \cdot 1 0^{14}) GeV$ , which is shown to result in successful $N_{2}$ -dominated leptogenesis, consistent with current cosmological data.
hep-phJHEP(2025)·5 citations
17*
Spurion Analysis for Non-Invertible Selection Rules from Near-Group Fusions
Motoo Suzuki🇮🇹 · Ling-Xiao Xu🇮🇹 · Hao Y. Zhang🇯🇵
We generalize the framework of spurion analysis to a class of selection rules arising from non-invertible fusion algebras in perturbation theory. As a first step toward systematic applications to particle physics, we analyze the near-group fusion algebras, defined by fusion rules built from a finite Abelian group $G$ extended by a single non-invertible element. Notable examples include the Fibonacci and Ising fusion rules. We introduce a systematic scheme for labeling coupling constants at the level of the non-invertible fusion algebra, enabling consistent tracking of couplings when constructing composite amplitudes from simpler building blocks. Our labeling provides a clear interpretation of why the tree-level exact non-invertible selection rules are violated through radiative corrections, a unique phenomenon essential to ``loop-induced groupification''. We also identify the limit where the near-group fusion algebra is lifted to a $G \times Z_{2}$ group, which provides an alternative scheme of spurion analysis consistent with the original one based on the near-group algebra. Meanwhile, we highlight the distinctions between the selection rules imposed by the near-group fusion algebra and those from breaking the $G \times Z_{2}$ group.
hep-phhep-th20 citations
18*
Classical constant electric fields and the Schwinger effect in de Sitter
Mar Bastero-Gil🇪🇸 · Paulo B. Ferraz🇪🇸 · António Torres Manso🇪🇸 · Lorenzo Ubaldi🇸🇮 · Roberto Vega-Morales🇪🇸
We study constant classical electric fields and the Schwinger effect in de Sitter space, with potential implications for magnetogenesis and inflationary dark matter production. Treating the photon as a dynamical field, we show that sustaining a constant electric field in de Sitter requires a tachyonic photon mass of order the Hubble scale. This observation has physical implications, as it alters the infrared behaviour of the induced Schwinger current. Using an on-shell renormalization condition consistent with a tachyonic photon, we recompute the current for charged fermions and scalars, finding it to be finite and positive even in the massless limit of the charge carriers-contrary to earlier results predicting a puzzling negative IR divergence. For scalars, we include a non-minimal coupling to the Ricci curvature, enabling us to analyze the conformal limit, where the current closely matches that of charged fermions.
hep-phastro-ph.COgr-qchep-thJCAP(2026)·4 citations
19*
Tropical regions of near mass-shell pentabox
A.V. Belitsky🇺🇸 · V.A. Smirnov🇷🇺
Coulomb branch amplitudes of maximally supersymmetric Yang-Mills theory display infrared properties different from their conformal counterparts. While the four-leg amplitude is known to very high perturbative orders, amplitudes of higher multiplicity fall into an uncharted territory starting already from two loops. The reason for this is that they are not easily amenable to traditional techniques like canonical differential equations due to the uncontrolled swelling of solutions to integration-by-parts identities. In this paper, we break the barrier for the five-leg amplitude using a technique based on the analysis of Newton polytopes corresponding to Feynman/Schwinger integrands and their tropical geometry. Specifically, we analytically evaluate the near mass-shell limit of the off-shell pentabox in terms of Goncharov polylogarithms.
↳ hep-thhep-phPRD(2026)·7 citations
20*
Anisotropic Neutrino Emission from Spinning, Moving, and Charged Primordial Black Holes
Arnab Chaudhuri🇯🇵
The angular and spectral features of neutrinos emitted from primordial black holes (PBHs) carry key imprints of the black hole's fundamental properties. This work investigates the directional emission of neutrinos from Kerr-Newman PBHs undergoing Hawking evaporation, accounting for the combined effects of spin, motion, and electric charge. Rotation induces anisotropic fluxes through axisymmetric geometry and spin-dependent greybody factors, while relativistic motion leads to pronounced Doppler beaming along the direction of travel. Electric charge modifies the thermodynamic evolution and suppresses the emission of like-charged particles, altering the overall spectrum and burst duration. The resulting neutrino flux exhibits rich angular structure, energy dependence, and time profiles that vary with PBH parameters. These directional signatures enhance the prospects for detection at current and future neutrino observatories, and offer new multi-messenger probes of PBH populations in the early universe.
↳ astro-ph.COhep-ph1 citation
21*
Resurrecting Vanilla Power Law Inflation with the aid of Continuous Spontaneous Localization in the ACT era
Suratna Das🇮🇳
The Vanilla Power Law Inflation is plagued with two severe drawbacks, the one being the issue of graceful exit, and the other being its compatibility with the existing data. There's yet another daunting problem generic to any inflationary model, and not particular to the Power Law Inflation, is the issue of classicalization of the primordial quantum perturbation. This issue is often treated as an isolated problem primarily because decoherence is often invoked to tackle such problems and decoherence, in principle, doesn't leaves any observational imprints. However, that's not the case if one invokes the collapse models of quantum mechanics to resolve such a problem, because the collapse models do modify the Schrödinger evolution of the quantum system and the modified dynamics is bound to leave imprints. We show that collapsed modified Power Law Inflation can indeed circumvent the issue with observations and can be made compatible with all the current data coming from {\it Planck}, {\it ACT}, DESI and BAO while resolving the classicalization issue associated with the quantum primordial fluctuations. Such an inflationary model also produces a more red-tilted tensor spectrum and no running for both the scalar and tensor spectral indices, which can be a litmus test for this model.
↳ astro-ph.COgr-qchep-phquant-phPRD(2025)·5 citations
22*
Dynamical backreaction of a mass-acquiring scalar field on first-order phase transitions
Yuan-Jie Li🇨🇳 · Jing Liu🇨🇳 · Zong-Kuan Guo🇨🇳
Phase transitions in the early Universe give rise to effective masses for massless fields in the symmetry-broken phase. We perform lattice simulations to study the dynamical impact of a mass-acquiring spectator field on the evolution of first-order phase transitions and the associated gravitational-wave production, while keeping the effective potential responsible for bubble nucleation fixed. In addition to the well-known friction effects, we identify a novel effect that significantly enhances the strength of first-order phase transitions. In contrast to the general scenario, although the effective potential governs the tunneling rate, the amplitude of the $χ$ field is strongly suppressed inside the true vacuum bubble, resulting in a faster bubble expansion than predicted by the effective potential alone. The amplitude of the mass-acquiring field is highly suppressed in the true vacuum bubbles, resulting in additional release of vacuum energy that concentrate on the bubble walls. We further develop an analytical framework that not only explains our numerical results but can also be used to improve the estimation of gravitational-wave signals in related phase-transition scenarios.
↳ astro-ph.COhep-phPRD(2026)·3 citations
23*
Proof of a Generalized Ryu-Takayanagi Conjecture
Artem Averin🇩🇪
We derive a generalized version of the Ryu-Takayanagi formula for the entanglement entropy in arbitrary diffeomorphism invariant field theories. We use a recent framework which expresses the measurable quantities of a quantum theory as a weighted sum over paths in the theory's phase space. If this framework is applied to a field theory on a spacetime foliated by a hypersurface $Σ,$ the choice of a codimension-2 surface $B$ without boundary contained in $Σ$ specifies a submanifold in the phase space. For diffeomorphism invariant field theories, a functional integral expression for their density matrices was recently given and then used to derive bounds on phase space volumes in the considered submanifold associated to $B .$ These bounds formalize the gravitational entropy bound. Here, we present an implication of this derivation in that we show the obtained functional integral expression for density matrices to be naturally suited for the replica trick. Correspondingly, we prove a functional integral expression for the associated entanglement entropies and derive a practical prescription for their evaluation to leading order and beyond. An important novelty of our approach is the contact to phase space. This allows us both to obtain a prescription for entanglement entropies in arbitrary diffeomorphism invariant field theories not necessarily possessing a holographic dual as well as to use entanglement entropies to study their phase space structure. In the case of the bulk-boundary correspondence, our prescription consistently reproduces and hence provides a natural and independent proof of the Ryu-Takayanagi formula as well as its various generalizations. These include the covariant holographic entanglement entropy proposal, Dong's proposal for higher-derivative gravity as well as the quantum extremal surface prescription.
↳ hep-thgr-qchep-ph1 citation
24*
Spin versus Magic: Lessons from Gluon and Graviton Scattering
John Gargalionis🇦🇺 · Nathan Moynihan🇬🇧 · Sokratis Trifinopoulos🇨🇭 · Ewan N. V. Wallace🇦🇺 · Chris D. White🇬🇧 · Martin J. White🇦🇺
The quantum property of non-stabiliserness, also known as magic, plays a key role in designing quantum computing systems. How to produce, manipulate and enhance magic remains mysterious, such that concrete examples of physical systems that manifest magic behaviour are sought after. In this paper, we study two-particle scattering of gluons and gravitons in Yang--Mills theory and General Relativity, as well as their supersymmetric extensions. This provides an interesting case of two-qubit systems, differing only in the physical spin of the qubits. We show that magic is generically produced in both theories, and also show that magic typically decreases as the spin of the qubits increases. The maximal magic in each case is found to be substantially less than the known upper bound. Differences in the profile of magic generation can be traced to the known physics of each theory, as manifested in relations between their respective scattering amplitudes. Our case study may provide useful insights into understanding magic in other systems.
↳ hep-thhep-phquant-phPRD(2026)·27 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.