Constrained thermodynamics and geodesic observables of an effective non-commutative Kerr-like black holeWe investigate the horizon structure, constrained thermodynamics, and geodesic properties of an effective Kerr-like black hole in a non-commutative background. Deformation modifies the radial…H. Hassanabadi, L. A. López, N. Bretón et al.·Jul 30, 2026SaveLearn
Tidal Love numbers of multi-state Boson starsIn this paper, we calculate the tidal Love numbers of multi-state boson stars (MSBSs) composed of ground state and first excited state complex scalar fields. Under synchronized and nonsynchronized…Xin-Lei Zhao, Jun-Ru Chen, Yong-Qiang Wang·Jul 30, 2026SaveLearn
Bridging Superfluid and Nonminimally Coupled BEC Dark Matter through RAQUALMotivated by their common condensed-matter inspiration and their shared aim of reconciling MOND-like phenomenology on galactic scales with particle dark matter on larger scales, we investigate the…Stefano Liberati, Valentin Pomakov, Samuele Silveravalle·Jul 30, 2026SaveLearn
Prism Effect in Quantum GravityModifications to the dispersion relation of electromagnetic (EM) waves are a central probe in the search for quantum gravitational effects. In this work, we construct a general framework for the…Aliasghar Parvizi, Tomasz Pawłowski·Jul 30, 2026SaveLearn
Post-Newtonian N-Body Dynamics in Extended Theories of GravityWe derive the complete first post-Newtonian (1PN) Lagrangian and corresponding equations of motion for the relativistic N-body system in Scalar-Tensor-Fourth-Order Gravity (STFOG), including the…Antonio Tedesco·Jul 30, 2026SaveLearn
Tuning A Rotating Black Hole Spectrum with Dark Matter Halo: Quasibound States, Scalar Cloud, Black Hole Bomb and Superradiant ScatteringWe investigate the spectral dynamics of a rotating black hole embedded in a Dehnen (1,4,γ) dark matter halo, where quasibound states and superradiant scattering jointly characterize the physical…David Senjaya·Jul 30, 2026SaveLearn
A dark-matter-sensitive orientation clock near rotating black holesA coherent triaxial structure has an intrinsic orientation clock because rotation about its intermediate principal axis is unstable. I ask how this clock changes when the structure moves on a…Mohsen Fathi·Jul 30, 2026SaveLearn
Phase Transitions and Gravitational WavesWe present a Fisher matrix forecast for the spectral parameter reconstruction of a stochastic gravitational wave background generated by a first-order phase transition in the early universe. We use…Diego Rios, William H. Kinney·Jul 30, 2026SaveLearn
Hadronic lensingWe introduce an analytic approach to study gravitational lensing in the presence of a distribution of hadrons. The situation is analogous to the propagation of photons in a medium with a nontrivial…Fabrizio Canfora, Cristóbal Corral, Borja Diez·Jul 30, 2026SaveLearn
Near--extremal gravitational collapse in 4+1 dimensions: Schwarzschild--de--Sitter spaceWe numerically study a formation of near extremal horizons from a gravitational collapse of radially symmetric gravitational waves in 4+1 dimensions within the framework of pure Einstein gravity…Maciej Dunajski, Sebastian J. Szybka·Jul 30, 2026SaveLearn
Tests of scalar polarizations with multi-messenger eventsGravitational wave (GW) observations provide a unique opportunity to test Einstein's General Relativity (GR) in the strong-field regime. While GR predicts only two tensor polarization modes,…Sk Md Adil Imam, Macarena Lagos·Jul 30, 2026SaveLearn
Photon Surfaces in Higher-Curvature Gravity: Implications for Quasinormal Modes and Gravitational LensingEffective field theory (EFT) provides a systematic framework to describe possible deviations from general relativity through higher-curvature corrections to the gravitational action, capturing…Takamasa Kanai·Jul 30, 2026SaveLearn
The Vacuum Displacement Principle: Theoretical Framework and Local PhenomenologyWe present a modified gravitational framework in which the standard Einstein field equations are sourced by a classical matter sector coupled to a Higgs-type scalar field χ modeling a dynamic…Rodrigo Maier·Jul 30, 2026SaveLearn
Nonlinear Lattice Framework for Inflation: Bridging stochastic inflation and the δN formalismUnderstanding when inflationary perturbations become genuinely nonlinear near the horizon crossing requires methods that go beyond both linear perturbation theory and the gradient expansion. In this…Pankaj Saha, Yuichiro Tada, Yuko Urakawa·Jul 30, 2026SaveLearn
MOND from Second-Order Moment Modified Acceleration and Quantum Equivalence PrincipleThis paper proposes a novel non-inertial quantum effect wherein particle spectra show second-order moment extra Gaussian broadening due to local short-time (non-uniform) acceleration, as well as in a…M. J. Luo·Jul 30, 2026SaveLearn
Lens Stochastic Diffraction: A Signature of Compact Objects in Gravitational-Wave DataEvery signal propagating through the universe is diffracted by the gravitational field of intervening objects, known as gravitational lenses. Diffraction is most efficient when caused by compact…Miguel Zumalacárregui·Jul 30, 2026SaveLearn
Continuous gravitational waves from Galactic neutron stars: demography, detectability and prospectsWe study the prospects for detection of continuous gravitational signals from "normal" Galactic neutron stars, i.e. non-recycled ones. We use a synthetic population generated by evolving…Gianluca Pagliaro, Maria Alessandra Papa, Jing Ming et al.·Jul 30, 2026SaveLearn
General Relativistic Shock Waves that Exhibit an Accelerated ExpansionThis paper concerns the construction and analysis of a new family of exact general relativistic shock waves. The construction resolves the long-standing open problem of determining the expanding…Christopher Alexander·Jul 30, 2026SaveLearn
Structural morphology and the gravitational arrow of timeThe Newtonian N-body problem in the zero-energy, zero-linear-momentum, and zero-angular-momentum sector provides a time-reversal-invariant setting in which generic complete solutions possess a…Julian Barbour, Francisco S. N. Lobo, Maria I. R. Lourenço·Jul 29, 2026SaveLearn
Quark Stars in f(T,T) Gravity: Structure, Stability, and Observational ConstraintsQuark stars-hypothetical compact stars made entirely of deconfined quark matter-offer a clean testing ground for gravity beyond general relativity. We study their structure in f(T,T)…Takol Tangphati, Ayan Banerjee, Izzet Sakalli et al.·Jul 29, 2026SaveLearn
Gauge versus (hidden) physical symmetries of FLRW cosmologiesIn generally covariant theories, evolution in coordinate time is a gauge transformation, so that a symmetry made manifest in a gauge-fixed description need not be a symmetry of the physical dynamics.…Andrea Calcinari, Adrià Delhom, Federico Greco et al.·Jul 29, 2026SaveLearn
Inflation in unimodular loop quantum cosmologyWe study inflation in the setting of unimodular loop quantum cosmology, where time evolution is defined in unimodular time rather than with respect to a free, massless scalar field as is standard in…Steffen Gielen, Rita B. Neves·Jul 29, 2026SaveLearn
Nonlinear Dynamics near the Threshold of Gravitational CollapsePerturbation theory is an essential tool to model and interpret gravitational dynamics, for example, binary black hole mergers. Therefore it is also crucial to precisely understand its regimes of…Jaime Redondo-Yuste, Josu C. Aurrekoetxea·Jul 29, 2026SaveLearn
Hubble tension problem encompassed by phase-space quantum cosmologyAnalytical solutions encompassing the so-called Hubble tension problem are revisited through the framework of Weyl--Wigner quantum mechanics and discussed in the context of generalized phase-space…Alex E. Bernardini·Jul 29, 2026SaveLearn
Perturbing Gravitational Atoms: Negative Love, Resonant Tides and Shifted ResonancesThe superradiant instability of rotating black holes can generate a significant overdensity of bosonic matter around them, together forming a gravitational atom. This mechanism allows one to probe a…Mateja Bošković, Nikola Savić·Jul 29, 2026SaveLearn