The fall and the rise of Weyl gauge theoryIn 1918 Weyl introduced Weyl conformal geometry and its associated quadratic action which was the first gauge theory, of the Weyl group (of dilatations and Poincaré symmetry). The initial physical…D. M. Ghilencea·Jun 19, 2026SaveLearn
Constraining Lorentz and parity violations in gravity with multiband gravitational wave observationsThis study evaluates the capability of future multi-band observations of gravitational waves emitted from binary black hole coalescences, utilizing joint third-generation ground-based (CE, ET) and…Zhi-Xin Jia, Tao Zhu, Zhoujian Cao·Jun 19, 2026SaveLearn
Where are linearized gauge invariants encoded for plane waves in linearized gravity?The Newman--Penrose (NP) formalism is traditionally used to analyze the polarization content of gravitational waves, while the gauge-invariant Bardeen formalism provides a complementary, and often…R. Radhakrishnan, D. McNutt, D. Mirfendereski et al.·Jun 19, 2026SaveLearn
Boson Stars in Bumblebee Gravity and Their Gravitational Waveforms from Extreme-Mass-Ratio InspiralsWe investigate the impact of Lorentz violation on the compactness of mini-boson stars and the resulting gravitational-wave signals from extreme-mass-ratio inspirals (EMRIs) within the framework of…Mao-Jiang Liu, Long-Xing Huang, Yong-Qiang Wang et al.·Jun 19, 2026SaveLearn
Gravitational radiations from periodic orbits around a black hole in the effective field theory extension of general relativityThe study of periodic orbits in extreme-mass-ratio inspirals is essential for understanding the dynamics of small bodies orbiting supermassive black holes. In this paper, we study the periodic orbits…Shuo Lu, Hao-Jie Lin, Tao Zhu et al.·Jun 19, 2026SaveLearn
Gravitational radiations from periodic orbits around Einstein-Æther black holesIn this work, we investigate the gravitational wave emission from the periodic orbital motion of a test particle around two specific types of black holes in Einstein-Æther theory, a modified gravity…Shuo Lu, Tao Zhu·Jun 19, 2026SaveLearn
Solving Einstein Field Equations on a Digital Quantum ComputerIn this work, we show how simulations performed on classical computers such as those of Numerical Relativity can be tackled by quantum algorithms for solving systems of partial differential…Clelia Altomonte, Malcolm Fairbairn·Jun 18, 2026SaveLearn
Out-of-Equilibrium Effects in Non-Radial Relativistic Stellar Perturbations: A Model-Agnostic Formulation and Mode AnalysisWe present a systematic, model-agnostic analysis of out-of-equilibrium effects, including viscosity and thermal conductivity, in non-radial oscillations of relativistic stars. Extending the…Takuya Katagiri, Victor Guedes, Kent Yagi·Jun 18, 2026SaveLearn
Quantum Dust from the Curse of DimensionalityWhy do unrelated approaches to quantum gravity nearly all find spacetime two-dimensional at the shortest scales? Each theory answers only within its own dynamics; we highlight a single kinematic…Kenan Oggad·Jun 18, 2026SaveLearn
Scattering, Hawking Radiation and Neutrino Energy Deposition in Euler-Heisenberg Black Holes Surrounded by Perfect Fluid Dark MatterWe study the dynamical and scattering properties for the Euler-Heisenberg BH surrounded by perfect fluid dark matter. The geometry contains a compact non-linear electrodynamic correction governed by…Ramon Becar, P. A. Gonzalez, Ali Ovgun et al.·Jun 18, 2026SaveLearn
ISIM(2) gravitational gauge model via Soft Algebra formalismThis work presents a comprehensive account of a gravitational model based on the gauging of the ISIM(2) Lorentz subgroup parameters through the so-called soft algebra formalism. After…J. M. B. Matzenbacher, J. M. Hoff da Silva·Jun 18, 2026SaveLearn
The Cosmological Constant Problem: An Accessible IntroductionWe present a pedagogical introduction to the cosmological constant problem that requires only basic knowledge of quantum field theory and general relativity. A massive real scalar field is used to…Ali Kaya, Adam Lahey·Jun 18, 2026SaveLearn
Selective enhancement of quantum decay channelsIn the decay of quantum particles under field theoretic consideration, the decay rate is typically a convolution of the density of modes the primary field is allowed to decay into and the allowed…Pritam Nanda, Kinjalk Lochan·Jun 18, 2026SaveLearn
Study of Cosmic Acceleration of the Universe in the Presence of Bulk Viscous MatterOver the past century, both theoretical advancements and experimental observations have established General Relativity (GR) as the most successful framework for describing gravitational phenomena.…Dheeraj Singh Rana·Jun 18, 2026SaveLearn
Higher Lovelock Curvature Terms Favor Local Nakedness in Dust CollapseWe show that higher-curvature Lovelock terms do not restore local cosmic censorship in spherical dust collapse, but instead promote the local visibility of central shell-focusing singularities. On…Apratim Ganguly, Radouane Gannouji, Akshay Kumar·Jun 18, 2026SaveLearn
Impossibility of superluminal signalling rules out causal loops in conical spacetimesIn PRL 129, 110401 it was shown that it is theoretically possible to have operationally detectable causal loops without violating the principle of no superluminal signalling (NSS) in (1+1)-Minkowski…Maarten Grothus, V. Vilasini·Jun 18, 2026SaveLearn
Constitutive birefringence and critical curves in the rotating García--Díaz black holeWe study high-frequency electromagnetic propagation in the rotating García--Díaz solution of Einstein gravity coupled to NLED. In this system, light is not governed only by the null cone of the…Ariel Guzmán, Mohsen Fathi, J. R. Villanueva·Jun 18, 2026SaveLearn
The auxiliary-metric formulation of Born-Infeld New Massive GravityBorn-Infeld New Massive Gravity (BINMG) completes New Massive Gravity to all orders in curvature through the determinant of the metric shifted by the Einstein tensor. We recast it with an independent…Bayram Tekin·Jun 18, 2026SaveLearn
Regular Black Holes from Anisotropic Source with Hydrodynamic Equation of StateWe study regular black hole solutions sourced by an anisotropic energy momentum tensor. It is well known that the geometry of the interior of a spherically symmetric regular black hole approaches the…Hassan Firouzjahi·Jun 18, 2026SaveLearn
On the Plebanski Formulation with Energy MomentumIn Plebanski's formulation the coupling of matter is less direct than in the metric formulation since the energy-momentum tensor Tμν is symmetric, while the Plebanski variables are naturally…Jack C. M. Hughes, Joudy F. Jamal Beek, Fedor V. Kusmartsev·Jun 18, 2026SaveLearn
Cosmological Constraints on Minimal Cubic Galileon Models in Teleparallel GravityCubic Galileon cosmological models provide a well-motivated framework for investigating late-time cosmic acceleration beyond the standard ΛCDM paradigm. In this work, we study observational…Akbar Davlataliev, Abdurakhmon Nosirov, Odil Yunusov et al.·Jun 18, 2026SaveLearn
Covariant Tolman-Oppenheimer-Volkoff equations in Energy-Momentum Squared GravityWe study static, spherically symmetric stellar configurations in an extended class of Energy--Momentum Squared Gravity using the covariant \(1+1+2\) semi-tetrad formalism. For perfect physical…Eduardo Bittencourt, Mariam Campbell, Peter K. S. Dunsby et al.·Jun 18, 2026SaveLearn
Photon surface extensions in general spherical dust collapseWe extend the analysis of photon surfaces in spherical dust collapse to the general, non-marginally bound case, i.e.\ allowing the energy function k(x) of the Lema\ıtre--Tolman--Bondi…Roberto Giambò, Camilla Lucamarini·Jun 18, 2026SaveLearn
Polarization-Dependent Photon Propagation, Quasinormal Modes, and Gravitational Lensing in Higher-Curvature Effective TheoriesWe investigate the impact of higher-curvature corrections on photon propagation within an effective field theory framework and their observational consequences in strong gravitational fields. We…Takamasa Kanai·Jun 18, 2026SaveLearn
Graviton FloorIt has been observed that the Universe is permeated by the cosmic photon background, ranging from radio waves to gamma rays. We investigate the conversion of the photon background into gravitons in…Himeka Matsuo, Asuka Ito, Kazunori Kohri et al.·Jun 18, 2026SaveLearn