Optical Appearances of Accreting Ellis-Bronnikov Wormholes Observed from Both Sides of ThroatsThis study investigates the optical appearance of the Ellis-Bronnikov wormhole as viewed from both sides of its throat, under conditions of optically thick and thin accretion. By solving the geodesic…Yu-Hao Cui, Kai Lin, Sen Guo et al.·Jun 29, 2026SaveLearn
The entropy of black hole under second-order deviation from equilibriumWe investigate the entropy of a dynamical black hole arising from second-order perturbations of a general stationary background with a bifurcate Killing horizon. Using Gaussian null coordinates, we…Wen-Tao Fu, Ming-Fei Ji, Yu-Sen Zhou et al.·Jun 29, 2026SaveLearn
Hawking Temperatures and Radiation Estimates for Dilaton--de Sitter Black HolesCharged dilaton black holes with a positive cosmological constant provide a useful arena in which to test how scalar hair modifies semiclassical physics in a spacetime with two Killing horizons. The…Can Ertugay·Jun 29, 2026SaveLearn
Bosonic and fermionic mutual information of N-partite systems in dilaton black hole backgroundWe investigate multipartite total amount of correlations by analyzing the mutual information of N-partite states for both free bosonic and fermionic fields in the background of a…Xiao-Wei Teng, Rui-Yang Xu, Hui-Chen Yang et al.·Jun 29, 2026SaveLearn
Light propagation and gravitational lensing effects in charged Kalb-Ramond spacetime in nonlinear electrodynamicsIn this work, we theoretically investigate the deflection of light for strong- and weak-field regimes in the background of an electrically charged BH described in Kalb-Ramond gravity, which…C. F. S. Pereira, Marcos V. de S. Silva, A. R. Soares et al.·Jun 29, 2026SaveLearn
Chaotic imprints of dark matter in extreme mass-ratio inspiralsExtreme mass-ratio inspirals (EMRIs) are among the most powerful probes of strong-field gravity and of the environments surrounding supermassive compact objects. Motivated by the expected presence of…Mustapha Azreg-Aïnou, Mubasher Jamil, Emmanuel N. Saridakis·Jun 29, 2026SaveLearn
Symmetric teleparallel gravitational effects on solar neutrino oscillationsNeutrino oscillations probe the quantum gravity interface in unique ways. While gravitational effects on neutrinos are well studied in general relativity and torsion based geometries, the symmetric…Aysel Cetinkaya, Muzaffer Adak, Ozcan Sert et al.·Jun 29, 2026SaveLearn
The Topological Multiverse as the Self-Consistent Extension of Everettian QM to Quantum GravityThe ``fine-tuning" of the fundamental constants, from the cosmological constant to the gauge structure of the Standard Model, suggests that our universe inhabits a rare, life-permitting island…Edward J Shaya·Jun 29, 2026SaveLearn
A battle of designs: triangular vs. L-shaped detectors and parity violation in the gravitational-wave backgroundWe investigate the prospects for detecting a parity-violating gravitational-wave background (GWB) with third-generation ground-based detector networks. We focus on a network consisting of one…Hannah Duval, Charles Badger, Mairi Sakellariadou et al.·Jun 29, 2026SaveLearn
Ringdown modulation of acceleration radiation in the Schwarzschild backgroundWe derive an analytic first-order description of how Schwarzschild ringdown affects a detector-based detailed-balance diagnostic in a near-horizon, single-mode setting. A freely falling two-level…Reggie C. Pantig·Jun 29, 2026SaveLearn
GWTC-4.0: Methods for Identifying and Characterizing Gravitational-wave TransientsThe Gravitational-Wave Transient Catalog (GWTC) is a collection of candidate gravitational-wave transient signals identified and characterized by the LIGO-Virgo-KAGRA Collaboration. Producing the…The LIGO Scientific Collaboration, the Virgo Collaboration, the KAGRA Collaboration et al.·Jun 29, 2026SaveLearn
Observables are glocalWe show that the problem of observables can be fully resolved for background independent theories defined on graphs, through the explicit construction of complete observables. The appropriate…Emil Broukal, Andrea Di Biagio, Eugenio Bianchi et al.·Jun 29, 2026SaveLearn
Acoustic Hawking radiation as a tunnelling effect in Michel accretionMichel accretion becomes transonic at the saddle point of a dynamical system. An Eulerian perturbation on the steady inflow produces the metric of an acoustic black hole. As a high-frequency…Nisha Jangid, Arnab K. Ray·Jun 28, 2026SaveLearn
Gravitating Tubes Beyond World Line Paradigm In General RelativityThe simplest point-particle description of classical matter is incompatible with Einstein's General Relativity because the stress-energy tensor of a point particle is distributional and…Abhi Savaliya·Jun 28, 2026SaveLearn
Saturation Equations of State in Critical Gravitational Collapse: The Primordial Black Hole ThresholdThe threshold and scaling laws of gravitational critical collapse depend sensitively on the matter equation of state. We investigate how these quantities are modified by a generic feature of dense…Benaoumeur Bakhti·Jun 28, 2026SaveLearn
Radial oscillations of quark stars in light of current astrophysical constraints: A comparative studyWe investigate the structural and oscillatory properties of isotropic strange quark stars within General Relativity, focusing on three physically motivated equations of state: the color flavor locked…G. Panotopoulos, A. Rincon, I. Lopes·Jun 28, 2026SaveLearn
Gravitational lensing by extremal rotating black holes in the strong deflection limitIn the strong deflection regime, light rays passing close to an astrophysical black hole may remain trapped near unstable photon orbits for a long time before escaping to infinity. The traditional…Fabiano Feleppa, Valerio Bozza, Welmoed Marit de Graaf·Jun 28, 2026SaveLearn
Self-force on a static scalar charge in traversable wormholesThe self-force acting on a charged particle is sensitive to the global structure of curved spacetime and can serve as a probe of geometry beyond local curvature. We compute the static scalar…Jerome P. Mecca, Ian Vega·Jun 28, 2026SaveLearn
Scalar Vacuum Polarization in Loop Quantum Gravity Black HolesA quantum macroscopic ``Kruskal'' black hole solution that incorporates quantum geometry effects has been derived in Loop Quantum Gravity as the counterpart to the classical Schwarzschild…Antonino Flachi, Marco Pasini·Jun 28, 2026SaveLearn
Beyond Classical Instability Limits of Anisotropic Self-gravitating Fluid Configurations in Hu-Sawicki Inspired f(R) GravityIn this draft, we investigate the dynamical instability of a restricted class of non-static, axially symmetric, self-gravitating fluid configurations within a Hu-Sawicki inspired f(R) gravity model.…M. Yousaf, A. Rehman, M. Zeeshan Gul et al.·Jun 28, 2026SaveLearn
Dark matter from the quadratic spinor Lagrangian II: A spin-3/2 no-go and the uniqueness of the spin-1/2 candidateThe composite Quadratic Spinor Lagrangian (QSL) propagates a spin-1/2 Dirac fermion whose mass is generated geometrically by cosmological trace torsion. It is natural to ask whether promoting the…Roh-Suan Tung·Jun 28, 2026SaveLearn
Gauge-invariant cosmological perturbations in Type 3 New General Relativity and background-hierarchy boundsIn this paper, we investigate background-hierarchy bounds in Type~3 of New General Relativity (NGR). These bounds arise when the contribution associated with the evolution of the background spacetime…Kyosuke Tomonari, Daniel Blixt, Sebastian Bahamonde·Jun 28, 2026SaveLearn
Ground measurements of the gravitational redshift questioned:re-establishing the physical basesMotivated by alleged inconsistencies in the scientific and educational literature, Asenbaum, Overstreet and Kasevich (2024; https://doi.org/10.1088/1402-4896/ad340c) aim to clarify some fundamental…Anna M. Nobili, Alberto Anselmi·Jun 28, 2026SaveLearn
Perturbative Renormalisation Group Improved Black Hole Solution and its Quasinormal ModesIn this work, we construct a perturbative black hole (BH) solution motivated by renormalization group (RG) improvement and investigate the quasinormal modes (QNMs) of the BH under scalar field…Rupam Jyoti Borah, Umananda Dev Goswami·Jun 28, 2026SaveLearn
Branch structure and nonextensive thermodynamics of Kalb-Ramond-ModMax black holes: observational signaturesMotivated by the low-energy effective action of heterotic string theory, where the Kalb-Ramond (KR) two-form and nonlinear gauge corrections arise simultaneously, we investigate a static, spherically…Erdem Sucu, Izzet Sakalli, Emmanuel N. Saridakis·Jun 28, 2026SaveLearn