Gravity/thermodynamics correspondence via black hole shadowsThe shadow of a black hole serves as a pristine window into the strong-gravity regime, with cuspy feature emerging as a smoking-gun signature of physics beyond the Kerr paradigm. In this paper, we…Shao-Wen Wei, Yu-Xiao Liu·Apr 6, 2026SaveLearn
Thermal channels of scalar and tensor waves in Jordan-frame scalar--tensor gravityWe study first-order scalar and tensor perturbations of Jordan-frame scalar--tensor gravity about a spatially flat FLRW background using the Einstein-like effective-fluid decomposition of the scalar…David S. Pereira, Francisco S. N Lobo, José Pedro Mimoso·Apr 6, 2026SaveLearn
Black Hole Persistence in New General RelativityWe investigate whether black holes can persist through the bounce with a minimal scale factor in a non-singular cosmology, whereby black holes from a previous contracting phase survive into the…Balkar Yildirim, Alan Albert Coley, Diego Fernando López·Apr 5, 2026SaveLearn
Global Dynamical Structure of Einstein-Scalar Cosmological SystemsIn this work, a global dynamical analysis of spatially flat FLRW cosmologies driven by a canonical scalar field minimally coupled to gravity is presented. Under suitable regularity and asymptotic…Prasanta Sahoo·Apr 5, 2026SaveLearn
Matching Tidal Deformability (Wilson) Coefficients to Black Hole Love Numbers in Higher-Curvature GravityWe present a consistent mapping between tidal deformability coefficients (tidal Love numbers) and Wilson coefficients in effective field theory (EFT) descriptions of higher-curvature theories of…Luohan Wang, Luis Lehner, Maitá Micol et al.·Apr 5, 2026SaveLearn
A Conformal Boundary Ansatz for Warm Inflation Initialization: A Toy ModelWe present a theoretical framework demonstrating a deterministic initialization mechanism for Warm Inflation via classical conformal boundary conditions. A persistent challenge in dissipative…Somnath Das, Rizwan ul Haq Ansari·Apr 5, 2026SaveLearn
Raychaudhuri Equation and Weyl-Driven Shear: A Weak-Field Approach to Lensing and Gravitational WavesThe letter studies phenomena like gravitational wave propagation and gravitational lensing using the celebrated Raychaudhuri equation (RE) in the weak field limit. Newtonian analogue of Relativistic…Madhukrishna Chakraborty, Subenoy Chakraborty·Apr 5, 2026SaveLearn
Testing the chaos bound in the spinor field of Einstein-Euler-Heisenberg-Anti-de Sitter spacetimeViolations of the chaos bound have been observed in scalar fields. In this work, we investigate the Lyapunov exponents of chaotic particles in the spinor field of an Einstein-Euler-Heisenberg-Anti-de…Xiaowei Li, Bingbing Chen, Guoping Li·Apr 5, 2026SaveLearn
Dymnikova-Schwinger quantum-corrected slowly rotating wormholes: Photon and spinning particle dynamicsThis work studies light propagation near slowly rotating traversable wormholes supported by a quantum-inspired matter source. The model is based on the Dymnikova density profile, viewed as a…A. Errehymy, Y. Khedif, M. Daoud et al.·Apr 4, 2026SaveLearn
Entanglement generation from gravitationally produced massless vector particles during inflationWe study the gravitational production of spectator massless vector particles in a single-field inflationary scenario, and the related entanglement generation across the Hubble horizon. Accordingly,…Alessio Belfiglio, Mattia Dubbini, Orlando Luongo·Apr 4, 2026SaveLearn
Topolons: Stable Particle-Like Remnants of Collapsed Vacuum Bubbles in a Three-Form Gauge SectorWe study a three-form gauge sector in four spacetime dimensions coupled to electrically charged spherical membranes with Dirac--Born--Infeld (DBI) worldvolume dynamics. The associated four-form field…Muhammad Ghulam Khuwajah Khan·Apr 3, 2026SaveLearn
Friedmann cosmology with fluids and hyperfluidsWe discuss flat Friedmann-Lemaitre-Robertson-Walker (FLRW) metric-affine cosmology where the metric and connection as well as the matter energy-momentum and hypermomentum all obey the symmetry of…Ilaria Andrei, Damianos Iosifidis, Laur Järv et al.·Apr 3, 2026SaveLearn
Analysis of Charged Compact Stars with Bardeen Black Hole in f(Q, T) GravityThis study investigates the behavior of charged compact stars within the f(Q, T) gravitational framework, where Q denotes the non-metricity scalar and…M. Sharif, Iqra Ibrar·Apr 3, 2026SaveLearn
A Topological Origin of Black Hole MassWe show that the notion of a black hole mass could be superceded by that of a topological charge in a spacetime without matter and curvature singularity. This feature emerges through a set new…Sandipan Sengupta·Apr 3, 2026SaveLearn
Proca-Maxwell System in an Infinite Tower of Higher-Derivative GravityWe numerically construct a five-dimensional Proca-Maxwell system coupled to an infinite tower of higher-derivative gravity, parameterized by the correction order and coupling constant. While the…Chen-Hao Hao, Yong-Qiang Wang, Jieci Wang·Apr 3, 2026SaveLearn
Exact general relativistic solutions for a cylindrically symmetric stiff fluid matter sourceIn this work, we derive the general solutions for a cylindrically symmetric space-time filled with a cosmological perfect fluid obeying p=γρ (0≤ γ≤ 1), where γ=1 represents a stiff or…Tiberiu Harko, Francisco S. N. Lobo, Man Kwong Mak·Apr 2, 2026SaveLearn
Cavity-controlled Inhibition of Decoherence in Accelerated Quantum DetectorsVacuum fluctuations of quantum fields provide an unavoidable environment for any quantum system coupled to it. We study the interplay between boundary conditions and acceleration in determining…Harkirat Singh Sahota, Shagun Kaushal, Kinjalk Lochan·Apr 2, 2026SaveLearn
Quadratic gravity corrections to scalar QNMs of rapidly rotating black holesIn an effective-field-theory framework for gravity, black-hole quasinormal mode spectra acquire corrections in quadratic-curvature, scalar-tensor extensions of general relativity. Previous…Stef J. B. Husken, Tom van der Steen, Simon Maenaut et al.·Apr 2, 2026SaveLearn
Emergence of volume-law scaling for entanglement negativity from the Hawking radiation of analogue black holesThe quantum information content of Hawking radiation holds the key to understanding black-hole evaporation and the fate of unitarity. Motivated by recent advances in cold-atom experiments, we develop…S. Mahesh Chandran, Uwe R. Fischer·Apr 2, 2026SaveLearn
Massive scalar field perturbations in noncommutative-geometry-inspired Schwarzschild black holeIn this paper, based on noncommutative-geometry-inspired Schwarzschild black hole, we employ a third-order WKB approximation approach to systematically calculate the quasinormal mode frequencies…Wen-Hao Bian, Zhu-Fang Cui·Apr 2, 2026SaveLearn
Interior geometry of black holes as a probe of first-order phase transitionTraditional diagnostics of black hole phase transitions rely on thermodynamic quantities defined at the event horizon or asymptotic boundary. Here, we demonstrate that the near-singularity geometry…Zi-Qiang Zhao, Zhang-Yu Nie, Shao-Wen Wei et al.·Apr 2, 2026SaveLearn
Nonperturbative suppression of beyond-General-Relativity effects in quadratic gravityQuadratic gravity is a well-motivated extension of general relativity~(GR) wherein the Einstein-Hilbert action is augmented by quadratic curvature terms. This theory is equivalent to GR in an…Georgios Antoniou, Leonardo Gualtieri, Paolo Pani·Apr 2, 2026SaveLearn
Probing Black Hole Thermodynamics and Microstructure via the Shadow of Sagittarius A*We explore the connection between black hole shadows, thermodynamic phase structure, and microstructure of charged and rotating black holes within General Relativity and Geometrothermodynamics.…Jose Miguel Ladino, Carlos E. Romero-Figueroa, Hernando Quevedo·Apr 2, 2026SaveLearn
Thermodynamics and phase transitions of charged-AdS black holes in dRGT massive gravity with nonlinear electrodynamicsInvestigating black holes in modified theories of gravity offers fertile ground for exploring phenomena beyond the scope of general relativity. We investigate a novel class of charged anti-de Sitter…Mohd Rehan, Arun Kumar, Tuan Q. Do et al.·Apr 2, 2026SaveLearn
Fluid perturbations from expanding bubbles in first-order phase transitionsWe study the power spectrum of the velocity field induced during a first-order phase transition occurring in the radiation-dominated era. We focus on the phase of bubble expansion, assuming that it…Chiara Caprini, Antonino S. Midiri, Simona Procacci et al.·Apr 2, 2026SaveLearn