The crust of dark-matter admixed neutron stars: bulk properties and torsional oscillationsWe study how dark matter (DM) impacts the crust and the spectrum of torsional crust oscillations of dark-matter-admixed neutron stars (DANSs). We construct two-fluid equilibrium solutions wherein…Jiayi Zhang, Hector O. Silva·Jun 25, 2026SaveLearn
Einstein-aether Elliptic Charges and the First Law of Asymptotically AdS Black HolesWe investigate the thermodynamic role of asymptotic aether alignment for universal horizons in Einstein-aether theory. In the static, spherically symmetric, asymptotically AdS sector with c14=0,…Walter Arata, Moustafa Ismail, Stefano Liberati et al.·Jun 25, 2026SaveLearn
Tidal Forces in the Presence of Torsion and NonmetricityThis work investigates how torsion and nonmetricity modify tidal accelerations in metric-affine gravity. We derive a projected deviation equation that generalizes the standard geodesic deviation…Armin van de Venn, Marcelo Netz-Marzola, David Vasak et al.·Jun 25, 2026SaveLearn
Critical collapse of vacuum spacetimes: Nakamura wave initial dataWe report on numerical simulations of critical phenomena in the collapse of axisymmetric vacuum gravitational waves, adopting families of initial data that, to the best of our knowledge, have not…Thomas W. Baumgarte, Carsten Gundlach, David Hilditch·Jun 25, 2026SaveLearn
Massive scalar fields in eccentric regime: Detectability and constraints from LISA observations of extreme mass-ratio inspiralsExtreme mass-ratio inspirals (EMRIs) are among the prime sources for future space-borne gravitational wave (GW) observatories and provide a useful setting for testing the presence of fundamental…Tieguang Zi, Shailesh Kumar, Jun-Kun Zhao et al.·Jun 25, 2026SaveLearn
Beyond the equation of state: a second-order diagnostic for dynamical dark energyThe first-order continuity equations determine the evolution of the energy densities but depend only on the instantaneous value of the dark-energy equation-of-state parameter. Differentiating these…Bob Osano·Jun 25, 2026SaveLearn
Endpoint Control of Thermodynamic Topological Classes for Fixed Charge dd-dimensional Reissner--Nordström Black Holes in a CavityWe study thermodynamic topological classes of d-dimensional Reissner--Nordström (RN) black holes in a cavity at fixed charge. Starting from the reduced Euclidean action, we use the quasilocal…Rongrong Zhai·Jun 25, 2026SaveLearn
Terrestrial Sagnac delay in scalar-tensor-vector-gravityThe scalar-tensor-vector-gravity (STVG), a prototype of modified gravity developed by Moffat, can correctly explain galaxy rotation curves, cluster dynamics, Bullet Cluster phenomena and cosmological…R. Kh. Karimov, R. N. Izmailov, K. K. Nandi·Jun 25, 2026SaveLearn
Time-domain evolution of Lorenz-gauge metric perturbations: taming the =m=1 gauge instabilityCalculating the spacetime metric perturbation (MP) sourced by a small "particle" of mass μM (with 0 < μ 1) moving in a Schwarzschild or Kerr "background" black hole spacetime…Jonathan Thornburg·Jun 25, 2026SaveLearn
A geometric multimessenger consistency test of radiative and near-zone gravity with LISA and SKACompact binary pulsars observed both through precision radio timing and low-frequency gravitational waves offer a direct way to compare the same binary geometry with two independent messengers. We…Bhooshan Gadre·Jun 25, 2026SaveLearn
Bipartite entanglement of the primordial Majorana during inflationWe use a primordial Majorana field as a fermionic probe of quantum correlations during inflation. Working in a torsion-free FLRW spacetime, we derive the two-component Majorana mode equations in an…Ai-chen Li, Han-Qing Shi, Keyun Wu·Jun 25, 2026SaveLearn
Conservation law of super-Lorentz charges across spatial infinityUnder assumptions compatible with generic gravitational scattering, the vacuum relativistic gravitational field is entirely determined at leading order in the large radius expansion at spatial…Geoffrey Compère, Sébastien Robert·Jun 25, 2026SaveLearn
From Holst to Carroll Gravity, a Hamiltonian point of viewThe Carrollian regime of gravity provides a useful ultrarelativistic framework for studying asymptotically flat spacetimes, horizon dynamics, and condensed matter systems. In this paper, we present a…J. Fernando Barbero G, Juan Margalef-Bentabol, Valle Varo et al.·Jun 25, 2026SaveLearn
Accretion Flow onto Ellis-Bronnikov WormholeStudy of accretion onto wormholes is rather rare compared to that onto black holes. In this paper, we consider accretion flow of cosmological dark energy modeled by barotropic fluid onto the…R. M. Yusupova, R. Kh. Karimov, R. N. Izmailov et al.·Jun 25, 2026SaveLearn
Primordial black hole formation in bulk-viscous cosmologyWe investigate primordial black hole (PBH) formation in a cosmological background with bulk viscosity. Using numerical simulations, we determine the collapse threshold and the resulting PBH mass. We…Zi-Yan Yuwen, Cristian Joana, Shao-Jiang Wang et al.·Jun 25, 2026SaveLearn
Accretion of a Plasma Vlasov Gas onto a Reissner-Nordström Black HoleWe develop a steady-state, spherically symmetric accretion model for a two-component plasma Vlasov gas in the background of a Reissner--Nordström black hole. Analytical expressions in parametric form…Yongqiang Liu, Hongsheng Zhang·Jun 25, 2026SaveLearn
Quasi-topological gravity for 4-dimensional Taub-NUT, near-horizon extreme Kerr, and swirling symmetriesWe classify 4-dimensional gravitational theories with integrability properties analogous to quasi-topological gravity, but for metrics with the symmetries of spherical, hyperbolic, and planar…Aimeric Colléaux, Ivan Kolář, Tomáš Málek·Jun 25, 2026SaveLearn
Strong deflection limit-analysis using Picard-Fuchs equation in Einstein-Maxwell-Dilaton spacetimeWe consider the deflection of light by a spherically symmetric and electrically charged black hole solution in the Einstein-Maxwell-Dilaton theory with specific values of the dilaton coupling…Tadashi Sasaki·Jun 25, 2026SaveLearn
Remarks on causal decrease, omniscient foliations and null lines in spacetimesThis work provides a counterexample to the previously asserted non--existence of future null lines in strongly causal spacetimes (M, g) foliated by a past--omniscient timelike foliation…Alfredo Bautista·Jun 25, 2026SaveLearn
Bessel-Hagen currents for the Fierz-Pauli actionFor electromagnetism in Minkowski spacetime, the Bessel-Hagen method gives a particularly direct Noetherian derivation of the standard gauge-invariant energy-momentum tensor. The key step is to…Michael Hobson, Will Barker, Anthony Lasenby·Jun 25, 2026SaveLearn
Efficient and stable computation of gravitational-wave fluxes from generic Kerr orbits via a unified Heun-function frameworkModeling extreme-mass-ratio inspirals hinges on the accurate and efficient computation of gravitational-wave fluxes from generic Kerr orbits. Conventional frequency-domain techniques are often…Changkai Chen, Zhoujian Cao, Jiliang Jing·Jun 25, 2026SaveLearn
Quantum Entanglement of Circular Strings as a Probe for Topologically Charged SpacetimesMotivated by the limited understanding of entanglement entropy in non-asymptotically AdS spacetimes, we develop a framework in which a circular string is embedded as a quantum probe in a spherically…Ai-chen Li, Xin-Fei Li, Xuanting Ji·Jun 25, 2026SaveLearn
Curvature bounds, regularity and inextendibility of spacetimesWe provide a completely new relation between curvature bounds and definiteness of the causal character of maximizers by exploiting the robust notion of synthetic curvature. This enables us to relate…Tobias Beran, John Harvey, Clemens Sämann·Jun 25, 2026SaveLearn
Plasma effects on gravitational lensing and shadow observables of a Kerr-like black hole in a dark matter haloPlasma surrounding a black hole modifies light propagation and can alter the observed shadow, potentially affecting the interpretation of Event Horizon Telescope data. We study the effects of dark…Connor McMillin, Zhichen Guan, Owen Gartlan et al.·Jun 25, 2026SaveLearn
Observational and Thermodynamic aspects of one-dimensional Dark Energy EoS parametrization modelsWe investigate the observational and thermodynamic viability of Gong-Zhang (GZ) Type~I (GZ1) and Type~II (GZ2) dark-energy parametrizations using late-time cosmological probes including Type~Ia…Anirban Chatterjee, Yungui Gong·Jun 25, 2026SaveLearn