Lessons from binary dynamics of inspiralling equal-mass boson-star mergersWe explore the gravitational-wave phenomenology of equal-mass inspiralling boson-star binaries using numerical relativity simulations. In particular, we characterise the waveform differences between…Tamara Evstafyeva, Antonia Seifert, Ulrich Sperhake et al.·Apr 28, 2026SaveLearn
Massive scalar quasinormal modes of an asymptotically flat regular black hole supported by a phantom Dirac--Born--Infeld fieldWe study the quasinormal spectrum of a massive test scalar field in the exact asymptotically flat regular black-hole geometry supported by a phantom Dirac--Born--Infeld scalar. Using high-order WKB…Milena Skvortsova·Apr 28, 2026SaveLearn
Dynamical analysis of the covariant f(Q) gravity modelsIn this study, we explore the cosmological evolution of the Universe in the framework of covariant f(Q) gravity, with a coupling function that evolves dynamically in proportion to the Hubble…S. A. Narawade, S. A. Kadam·Apr 28, 2026SaveLearn
The properties and predictions of quasi-periodic oscillations around a black hole in nonlocal gravityWe investigate the dynamics of massive test particles around a static black hole in nonlocal gravity and examine the corresponding properties of HF QPOs, constraining the nonlocal parameter to $α/M…Tao-Tao Sui, Chen Long, Ye zhang·Apr 28, 2026SaveLearn
Gauge Theoretic Signal Processing II: Zero-Latency Whitening for Early Warning PipelinesLow-latency gravitational-wave search pipelines provide early-warning alerts for multimessenger astrophysical transients. Current pipelines whiten the data stream using acausal, linear-phase filters,…James Kennington, Joshua Black, Zach Yarbrough et al.·Apr 28, 2026SaveLearn
Detecting gravitational wave background with equivalent configurations in the network of space based optical lattice clocksThis paper studies the use of optical lattice clock (OLC) detector networks for detecting the stochastic gravitational-wave background (SGWB). Starting from the cross-correlation formalism for two…Mingzhi Lou, Hong Su, Tao Yang et al.·Apr 28, 2026SaveLearn
A general formalism for coupling scalar fields to the Einstein equations without a variational principleThe purpose of this work is to discuss how matter fields are coupled to gravity within the framework of General Relativity. Our particular focus here is on the coupling of scalar field models. In a…Joshua Ritchie·Apr 27, 2026SaveLearn
Bouncing cosmologies from Born-Infeld-type gravityWe construct a Born-Infeld-type f(R, G) modification of gravity, where G is the Gauss-Bonnet term, by embedding Born-Infeld electrodynamics in a five-dimensional pure modified…Yermek Aldabergenov, Wei Lin, Rongjian Li et al.·Apr 27, 2026SaveLearn
Semiclassical phases of charged spin-1/2 matter-wave interferometers in gravitational wave backgroundsA matter wave propagating through curved spacetime accumulates phase that encodes both geometry and gauge structure. We develop a semiclassical framework for charged spin-1/2 matter-wave…Nontapat Wanwieng, Apimook Watcharangkool·Apr 27, 2026SaveLearn
Pair-Dependent Drift of Kerr Neighboring-Overtone Gap MinimaWe study adjacent Kerr quasinormal-mode overtones under a spin scan with overtone labels held fixed, using a public Leaver-type solver on a uniform grid. The observable is the modulus of the…Yuye Wu, Hong-Bo Jin·Apr 27, 2026SaveLearn
gttgrr =-1 black hole thermodynamics in general quasi-topological gravityWe present a unified framework for the discussion of black hole thermodynamics of d-dimensional static black holes with spherical or compact hyperbolic horizon topology satisfying gttgrr=-1…Johanna Borissova·Apr 27, 2026SaveLearn
Strong-field signatures of a regular black hole in an Einasto dark matter haloWe investigate the strong-field phenomenology of a static and spherically symmetric regular black hole supported by an Einasto dark matter (DM) distribution. For the exponential Einasto profile, the…Mohsen Fathi, Faizuddin Ahmed·Apr 27, 2026SaveLearn
Peculiar velocities in the ΛCDM universeWe present a unified analysis of the linear evolution of peculiar-velocity perturbations in the distribution of pressureless matter after recombination. Our study is carried out within the framework…Evanthia Patliaka, Christos G. Tsagas·Apr 27, 2026SaveLearn
Toller matrices and the Feynman i in spinfoamsWe study the analytic properties and three equivalent representations of the Toller matrices T() which appear in the causal formulation of spinfoam transition amplitudes for 4d Lorentzian…Eugenio Bianchi, Chaosong Chen, Mauricio Gamonal·Apr 27, 2026SaveLearn
Wellposedness of the initial boundary value problem for the conformal field equationsWe provide a formulation of the initial boundary value problem for Friedrich's extended conformal Einstein field equations in which boundary data is prescribed on a timelike hypersurface located…Chris Stevens, Juan A. Valiente Kroon·Apr 27, 2026SaveLearn
Hawking radiation with dispersion: reconciling the Bogoliubov and tunneling approachesWe investigate Hawking-like particle production in analogue gravity systems with superluminal modified dispersion relations. For a broad class of even, convex, and polynomially bounded dispersion…Francesco Del Porro, Stefano Liberati, Marc Schneider·Apr 27, 2026SaveLearn
Quasinormal Modes, Greybody Factors and Rigorous Bounds for Quantum Oppenheimer-Snyder Black Hole with Quintessential Dark Energy and a String CloudsWe obtained quasinormal modes and greybody factors of the quantum Oppenheimer-Snyder (QOS) black hole with quintessential dark energy and string clouds. We compute the effective potentials of the…W. Sajjad, A. Zahid, M. A. Muawia et al.·Apr 27, 2026SaveLearn
Link-based causal set propagators in 1+1 dimensionsWe investigate whether retarded scalar propagators on causal sets can be expressed in terms of the link matrix L. For Poisson sprinklings into 1+1 dimensional Minkowski spacetime, we…Haye Hinrichsen, Arsim Kastrati·Apr 27, 2026SaveLearn
Hawking Temperature, Sparsity and Energy Emission Rate of Dark Matter Halo Regular Black HolesIn this paper, we investigate the thermodynamic and radiative properties of a regular black hole sourced by a dark matter halo described by the Einasto density profile. The closed-form expressions…Faizuddin Ahmed, Edilberto O. Silva·Apr 27, 2026SaveLearn
Geometry of transient gravitational waves and estimation of efficiencies of different detector configurationsThis work introduces a geometrical method for analyzing transient gravitational waves recorded at interferometric observatories. This approach is intended to aid in assessing the performance and…Osvaldo M. Moreschi·Apr 27, 2026SaveLearn
Gravitational waves of extreme-mass-ratio inspirals in a rotating black hole with Dehnen dark matter haloExtreme Mass Ratio Inspirals (EMRIs) are among the key targe sources for the space-based gravitational wave (GW) detectors. The waveforms of the EMRIs are highly sensitive to the types of the central…Kun Meng, Shao-Jun Zhang, Nan Yang·Apr 27, 2026SaveLearn
Pre-localization of Massive Black Hole Binaries in the Millihertz BandThe space-borne gravitational-wave (GW) detectors will open a new mass and redshift regime, allowing us to observe massive black hole binaries (MBHBs) throughout the Universe. A subset of these…Xue-Ting Zhang, Jonathan Gair, Chris Messenger et al.·Apr 27, 2026SaveLearn
Cone hierarchy and the screening of matter by gravityIn a previous paper by some of the authors (Gen. Rel. Grav. 56, 116, 2024), we introduced a novel paradigm with which to understand gravitational phenomena. We called it the Harmonic Background…Julio Arrechea, Carlos Barceló, Gil Jannes·Apr 27, 2026SaveLearn
BMS transformed Quantum String Dynamics near a Black HoleAsymptotic symmetries are expected to leave subtle but physically meaningful imprints on quantum probes of gravity, yet their manifestation in near-horizon dynamics remains incompletely understood.…Nihar Ranjan Ghosh, Malay K. Nandy·Apr 27, 2026SaveLearn
Primordial black hole production in scalar field inflation within f(T) gravityWe investigate inflation in modified teleparallel gravity within a scalar-tensor framework. We focus on two viable extensions of the Teleparallel Equivalent of General Relativity: a power-law model…Daniel Villalobos-Silva, Yerko Vásquez, Giovanni Otalora·Apr 27, 2026SaveLearn