Constraints on regular black holes with nonminimally coupled electromagnetic fieldsConstruction of physically realistic theories admitting regular black hole solutions remains an important open problem in gravitational physics. While theories with electromagnetic fields minimally…Ana Bokulić, Tajron Jurić, Luka Kanai Pejić et al.·Jul 1, 2026SaveLearn
Gravitational emissions and light curves of quasi-periodic orbits in Schwarzschild spacetime embedded in a Dehnen-type dark matter haloTimelike orbits in curved spacetimes encode intrinsic information about the background geometry and serve as critical probes for investigating gravitational theories and source distributions. In this…Shijie Tan, Chunhua Jiang, Dan Li et al.·Jul 1, 2026SaveLearn
Circular orbits in spherically symmetric spacetimes and BSW effect with nonzero forceWe consider circular particle motion under the action of an unspecified force in a static spherically symmetric spacetime. We derive the machinery that allows one to find the force acting on a…Hryhorii Ovcharenko, O. B. Zaslavskii·Jul 1, 2026SaveLearn
Gravastars on the brane with a timelike extra dimensionWe construct a gravastar configuration within the Shtanov-Sahni (SS) braneworld scenario, characterized by a timelike extra dimension and negative brane tension. Unlike classical black holes, which…Shounak Ghosh, Rikpratik Sengupta, Kazuharu Bamba·Jul 1, 2026SaveLearn
Post-Newtonian Dynamics of Radiating Charges: Canonical Formulation and Binary Inspiral LawsWe revisit an explicit electromagnetic analogue of the Post Newtonian Hamiltonian framework widely used in gravitational wave physics. Starting from the Lorentz Dirac equation, we implement the…Suhani Verma, Siddarth Mediratta, Nanditha Kilari et al.·Jul 1, 2026SaveLearn
Hydrodynamical Misner-Sharp Formulation for Gravitational Collapse in Scalar-Tensor TheoriesWe study the problem of gravitational collapse in the context of scalar-tensor theories of Gravity. We introduce a new hydrodynamical formulation in the Einstein frame, inspired by that of Misner and…Jose A. R. Cembranos, Luis Diaz-Gimenez·Jul 1, 2026SaveLearn
Power-law Bianchi type I inflation with multiple vector fieldsWe investigate an inflationary anisotropic universe in a supergravity-motivated model with one scalar field non-minimally coupled to multiple vector fields. We restrict ourselves to the Bianchi type…Duy H. Nguyen, Tuan Q. Do·Jul 1, 2026SaveLearn
Influence of Fermionic Dark Matter on the Structural and Tidal Properties of Neutron StarsWe investigate the influence of ideal Fermi gas dark matter on the observable properties of neutron stars (NSs). Our analysis considers dark matter (DM) particle masses (μ) ranging from 0.2 GeV…Monmoy Molla, Masum Murshid, Mehedi Kalam·Jul 1, 2026SaveLearn
Probing Gravitational Quantum Field Theory through Polarization Fingerprints of Gravitational WavesGravitational Quantum Field Theory (GQFT) has been proposed as a candidate framework to reconcile general relativity with quantum field theory, and a distinctive imprint on gravitational-wave (GW)…Cong Xu, Hong-Bo Jin, Yue-Liang Wu·Jul 1, 2026SaveLearn
Cosmological implications of f(T, B) gravity: constraints from recent observationsIn this work, we examine the theoretical framework of modified teleparallel gravity with the inclusion of the boundary term in the action and investigate its cosmological implications by considering…Laxmipriya Pati, Santosh V. Lohakare, S. K. Maurya·Jun 30, 2026SaveLearn
Cosmology with a Non-minimally Coupled Dark Matter Fluid II. Cosmological PerturbationsWe extend our study of a cosmological scenario in which dark matter is non-minimally coupled to gravity at the fluid level. In previous work, we showed that this interaction can drive an early phase…Samuele Silveravalle, Andrea Lapi, Francesco Benetti et al.·Jun 30, 2026SaveLearn
Eikonal Ringing, Shadows, Lensing, Grey-Body Factors, and Binding Energy of Asymptotically Flat Regular Black Holes in Phantom Dirac-Born-Infeld GravityWe develop a geodesic-optics description of eikonal quasinormal ringing, blackhole shadows, strong lensing, grey-body factors (GBFs), and the binding energy of massive particles for the…Mardon Abdullaev, Gumisbek Allambergenov, Diyorbek Rashidov et al.·Jun 30, 2026SaveLearn
Probing globular clusters parameters through gravitational wave lensing with stellar-mass black hole binariesGlobular clusters (GCs) can act as gravitational lenses for gravitational waves(GWs) in the wave-optics regime, imprinting frequency-dependent signatures on the observed signal. We investigate…Sreekanth Harikumar, Abbas Askar, Michał Bejger et al.·Jun 30, 2026SaveLearn
The unavoidable de Sitter fate of a scale-invariant UniverseWe consider a very general scale-invariant scalar-tensor theory of gravity and its flat cosmological solutions. We show that any stable configuration with non-degenerate gravitational dynamics…Chiara Cecchini, Massimiliano Rinaldi·Jun 30, 2026SaveLearn
A parametric signal plus noise inference framework for short duration non-Gaussian noise transientsGravitational waves are now routinely detected with ground-based observatories, and, through a process known as Bayesian inference, their source properties are inferred. However, terrestrial noise…Charlie Hoy, Ruxandra Bondarescu, Andrew Lundgren et al.·Jun 30, 2026SaveLearn
Distance duality relation in symmetric teleparallel gravityIn this work, we investigate the distance duality relation (DDR) in symmetric teleparallel theories, where gravity is mediated by nonmetricity. Starting from the general metric-affine formulation and…Rocco D'Agostino·Jun 30, 2026SaveLearn
Fragility of stealth solutions in mimetic gravityWe study a broad class of constrained mimetic-type extensions of general relativity with action S=∫ d4x-g\,(R/2+λ\,C[g,Ψ]+ L m), where R is the Ricci scalar,…Alireza Allahyari, Clarisse Donio, Mohammad Ali Gorji et al.·Jun 30, 2026SaveLearn
Semiclassical Backreaction of Massive Quantum Fields in the Spacetime of a Global MonopoleWe study the leading semiclassical backreaction of massive scalar, spinor, and vector fields in the spacetime of a pointlike global monopole. Starting from the renormalized stress-energy tensors…Owen Pavel Fernández Piedra·Jun 30, 2026SaveLearn
Cosmological Stealth fields and Non-Equilibrium thermodynamicsWe investigate the connection between cosmological stealth scalar fields and non-equilibrium thermodynamics in a spatially flat Friedmann-Lemaître-Robertson-Walker (FLRW) background. We consider a…Gilberto Aguilar-Pérez, Cuauhtemoc Campuzano, Víctor H. Cárdenas et al.·Jun 30, 2026SaveLearn
Decoherence of ergotropy of a relativistic battery as a probe of motion-selected Unruh thermality in Minkowski spacetimeWe put forward a physical model of a relativistic Unruh-DeWitt battery moving along a general accelerated trajectory, including a linear motion and a circular motion with a reflecting boundary. The…Gao-Feng Gan, Cheng-Tai Wu, Yin-Zhong Wu et al.·Jun 30, 2026SaveLearn
Galactic microlensing by backreacted massless wormholesWe study here a novel application of Kim \& Lee charged wormholes assuming them to be dark halo objects playing the role of lenses in the Galactic microlensing with source stars belonging to the…G. F. Akhtaryanova, R. Kh. Karimov, R. N. Izmailov et al.·Jun 30, 2026SaveLearn
On the Kalb-Ramond modified Lorentz violating hairy black holes and Thorne's hoop conjectureRecently, a class of static spherically symmetric power law corrected Lorentz violating (LV) Schwarzschild black holes in the Kalb-Ramond model have been derived and studied in the specific range of…K. K. Nandi, R. N. Izmailov, R. Kh. Karimov et al.·Jun 30, 2026SaveLearn
Stability of the Minkowski spacetime in Newman-Unti gaugeWe prove small-data global stability of the Minkowski solution to Einstein's equations in a centre-normalised outgoing null-geodesic gauge. Our scheme involves first using the rp-estimates of…Jonathan Luk, Sung-Jin Oh, Claude Warnick·Jun 30, 2026SaveLearn
Geometric formulation for Palatini-Cartan gravityMotivated by the increasing efforts to understand the covariant structure of physical models associated with General Relativity using different kinds of geometric frameworks, in this article we…Jasel Berra-Montiel, Iván Cortes-Cruz, Alberto Molgado·Jun 30, 2026SaveLearn
Phase space quantization of anisotropic cosmologies: Taub and Kantowski-Sachs modelsWe introduce an explicit construction of the non-diagonal and diagonal Wigner distributions for the homogeneous but anisotropic Taub and Kantowski-Sachs cosmological models within the framework of…Jasel Berra-Montiel, Alberto Molgado, Jorge Santacruz·Jun 30, 2026SaveLearn