Can One Hear the Absence of a Singularity?One of the central expectations of quantum gravity is the resolution of the curvature singularities predicted by General Relativity, potentially giving rise to effective black-hole geometries that…Matteo Della Rocca, Paolo Pani, Andrea P. Sanna·Oct 27, 2026SaveLearn
Self-gravitating Schrödinger--Poisson Solitons in Curved SpacetimeWe formulate a description of self-gravitating Schrödinger--Poisson (SP) solitons in curved spacetime using a local inertial frame centered on the soliton. In the weak-field and non-relativistic…Kei-ichi Maeda·Oct 27, 2026SaveLearn
Primordial black holes from a type-IIB/F theory inflaton potentialWe study the possibility of the formation of primordial black holes (PBHs) using an inflaton potential constructed by stabilizing all Kähler moduli employing both the perturbative and…Chitrak Sarkar, Amitava Choudhuri, Buddhadeb Ghosh·Oct 27, 2026SaveLearn
Realistic neutron stars in the constant-Q branch of f(Q) gravityWe investigate the hydrostatic equilibrium and global structure of neutron stars within symmetric teleparallel gravity, where gravitational interactions are mediated by the non-metricity scalar Q.…Debadri Bhattacharjee, Pradip Kumar Chattopadhyay, P. H. R. S. Moraes·Oct 27, 2026SaveLearn
Novel topological subclasses of a magnetic black hole in causal nonlinear electrodynamicsBy treating black-hole states as topological defects in thermodynamic parameter space, we investigate a static, asymptotically flat magnetic black holes in Einstein gravity coupled to causal…Qi-Qi Liang, De-jiang Yin, Yu-Die Wan et al.·Oct 27, 2026SaveLearn
Impact of deformation parameters on the greybody factor and Joule-Thomson expansions of Schwarzschild-AdS black holeThis paper investigates the greybody factor and Joule-Thomson expansion of deformed Schwarzschild-AdS black hole models. We constructed the Klein-Gordon equation into a Schrödinger-like wave equation…Faisal Javed, A. Eid, Arfa Waseem et al.·Oct 27, 2026SaveLearn
Improved constraints on higher-derivative effective field theory extensions of general relativity with GW230627015337Gravitational-wave (GW) observations of binary black holes provide a powerful probe of general relativity (GR) in the strong-field regime. In effective field theory (EFT) extensions of GR,…Tao Zhu·Oct 27, 2026SaveLearn
Reconstruction of the Riemann tensor from causal order and element countsA causal set is a locally finite partially ordered set. Causal set theory proposes such discrete structures as a basis for spacetime physics. Connecting this description with continuum physics…Nathan Madsen·Oct 27, 2026SaveLearn
Testing Conformal Weyl Gravity with Plasma Modified Black Hole Shadows and EHT ConstraintsWe study the shadows of a charged rotating de Sitter solution in fourth order conformal Weyl gravity (CWG) immersed in plasma and analyze the joint charge-plasma constraints. Our main goal is to…Zhichen Guan, Connor McMillin, Owen Gartlan et al.·Oct 27, 2026SaveLearn
Thermodynamic and structural properties of the thin atmosphere of a white dwarfWe determine thermodynamic and structural properties of the Coulomb plasma (jellium) in the thin atmosphere of a white dwarf using the path integral Monte Carlo method within a general relativity…Riccardo Fantoni·Oct 26, 2026SaveLearn
Classical traversability of a carbon BTZ wormholeWe investigate the classical traversability of an analogue spatial wormhole geometry realized on a two-dimensional curved carbon membrane. The background is obtained by implementing a…Valerie Tynianska, Alfredo Iorio·Oct 26, 2026SaveLearn
The Symbiosis of Vainshtein and Chameleon ScreeningWe present the first study of coexisting Vainshtein and Chameleon screening in cosmic structures. Screening hides fifth forces locally, keeping modified gravity viable. Realistic dark-energy models…Sergi Sirera, Tessa Baker, Clare Burrage et al.·Oct 26, 2026SaveLearn
On the Interpretation of Tests of the Horizon Area LawThis Letter investigates gravitational-wave tests of the horizon area law. Although they provide a striking consistency check of general relativity (GR), these tests rely on models that assume GR,…Selma Vangstein, Christopher J. Moore·Oct 26, 2026SaveLearn
Non-Perturbative Approach to Gravitational Particle Production in the Inflation-Kination Transition: Surveying a Wide Range of the Parameter SpaceIn this study, we investigate the gravitational particle production (GPP) as a natural reheating channel in time-dependent backgrounds. We focus on reheating in an inflation-kination background. To…Amirsalar Nikandish, Shiva Rostam Zadeh, Nematollah Riazi·Oct 26, 2026SaveLearn
Unified Dynamics of Black-Hole Interiors: From Geometric to Scalar-Kinetic DominanceWe identify a unified dynamical picture connecting small-amplitude scalar input at the event horizon to scalar--Kasner interiors. Within boundary-supported stationary families, area contraction…Fu-Guo Yang·Oct 26, 2026SaveLearn
Improved Gauge Conditions for Large Expansion Cosmological ModelsThis study develops a new gauge condition for performing long duration numerical evolutions of Einstein's equation on cosmological spacetimes with non-trivial spatial topologies. This new gauge…Fan Zhang, Lee Lindblom·Oct 26, 2026SaveLearn
A gaussian-process reconstruction of gravitational-wave friction from dark standard sirensStandard sirens provide a direct probe of the cosmic distance-redshift relation and therefore a powerful test of whether gravitational waves (GWs) propagate as predicted by general relativity on…Michele Mancarella, Viola De Renzis, Alessandro Agapito·Oct 26, 2026SaveLearn
Scalarized Einstein-Maxwell black holes in external scalar fieldsWe construct static black holes in Einstein-Maxwell-scalar theory under prescribed external scalar fields, mapping their existence domain and determining how their scalar charges vary with the…Lang Cheng, Guangzhou Guo, Yuhan Li et al.·Oct 26, 2026SaveLearn
Fresh Look at Shift Symmetric Modified GravityShift symmetric Horndeski gravity can be a simple, well posed theory with protection against quantum corrections. Overturning conventional thought that such a theory cannot cross the phantom divide…Rodrigo Calderon, Eric V. Linder·Oct 26, 2026SaveLearn
Semi-agnostic inspiral modeling: the massless scalar case at leading post-Newtonian orderWe introduce a semi-agnostic modeling framework for black hole binary inspirals beyond general relativity that fixes the field content without selecting a particular theory. We expand in the…Dario Rossi, Leonardo Gualtieri, Thomas P. Sotiriou·Oct 26, 2026SaveLearn
Attractors and initial-condition sensitivity in Horndeski cosmologiesWe study whether nearby homogeneous cosmological histories approach or move away from the Genesis and contracting solutions. We also determine how an uncertainty in the scalar velocity at a later…Yulia A. Ageeva, Andrey K. Sharofeev·Oct 26, 2026SaveLearn
First-order corrections to equatorial periodic orbits around rapidly rotating black holes in dynamical Chern--Simons gravityWe calculate first-order corrections to the energy, radial period, and circumferential turning radii of equatorial periodic orbits around rapidly rotating black holes in dynamical Chern--Simons (dCS)…Hao-Jie Lin, Tao Zhu, Jing-Fei Zhang et al.·Oct 26, 2026SaveLearn
Nonlinear Tides of Binary Neutron StarsNonlinear tides couple stellar oscillations and reshape the gravitational wave (GW) signal from inspiralling binaries. We present hydrodynamic simulations of nonlinear tides in inspiralling…Guangzhou Guo, Zhen Pan·Oct 26, 2026SaveLearn
Gravitationally Induced Polarization-Angle Rotation in Pulsar-Black Hole BinariesRadio pulsars emit highly polarized radiation whose polarization properties are commonly described by the Rotating Vector Model (RVM). In this work, we investigate the effects of gravitational light…Jyotijwal Debnath, Amodio Carleo, Delphine Perrodin et al.·Oct 26, 2026SaveLearn
Quasibound modes of rotating acoustic black holesIn this paper, we introduce a metric describing rotating acoustic black holes in spherical coordinates. This formulation allows us to obtain exact analytical solutions of the massless Klein--Gordon…H. S. Vieira, V. B. Bezerra·Oct 26, 2026SaveLearn