3824 papers
Quantum gravity represents the frontier where the very large meets the very small, attempting to unify Einstein's theory of gravity with the strange rules of quantum mechanics. This field explores the fundamental fabric of spacetime, seeking to understand how the universe behaves at its most extreme scales, from the heart of black holes to the moment of the Big Bang. Because these concepts often involve complex mathematics, they can feel distant to non-specialists, yet they hold the key to a complete picture of physical reality.
At Gist.Science, we bridge this gap by processing every new preprint in this category directly from arXiv. Our team provides both plain-language explanations and detailed technical summaries for each paper, ensuring that groundbreaking research is accessible to everyone, from curious students to seasoned researchers. Below are the latest papers in quantum gravity, offering fresh insights into the nature of our cosmos.
This paper derives horizon flux-balance laws and establishes adiabatic rigidity constraints for black-hole event horizons within a two-timescale perturbative framework, providing a systematic gauge-transformation method and second- to third-order conservation laws to model horizon absorption and backreaction in extreme mass-ratio inspirals.
This paper introduces a novel, physically motivated classification scheme for proto-neutron star oscillation modes based on restoring force energy and spatial origin, which is applied to 28 core-collapse supernova simulations to identify distinct mode families and confirm the PNS surface f-mode as the dominant high-frequency gravitational wave emitter.
This paper investigates the dynamics of spinless and spinning test particles in a scalarized wormhole spacetime, demonstrating how scalar coupling and spin-curvature interactions modify orbital frequencies, collision energetics, and innermost stable circular orbits to produce distinct quasi-periodic oscillation signatures that could differentiate these wormholes from standard black holes.
This paper derives a quantum-modified entropy bound for merging Schwarzschild black holes using Generalized Uncertainty Principle corrections, revealing that quantum gravity effects most restrictively constrain gravitational-wave energy emission in nearly equal-mass mergers.
This paper proposes a mechanism where axion-like particles modify Standard Model gauge field configurations to generate the observed baryon asymmetry and produce a unique, constant low-frequency Cosmic Microwave Background spectral distortion distinct from conventional y-type and -type distortions.
This paper utilizes a matrix-promoted Magnusian formalism to analyze wave scattering on spinning black holes within effective field theories of gravity, revealing that the gravitational spin Hall effect exhibits noncommutative wavenumber kicks distinct from general relativity and that black hole spin slightly tightens infrared causality constraints on EFT coefficients.
This paper presents an analytical model of static, spherically symmetric ultracompact objects in General Relativity with anisotropic stress and homogeneous density, demonstrating that configurations can exceed the Buchdahl limit and approach black hole compactness by transitioning from regular anisotropic stars to gravastars via a thick-shell construction that resolves central pressure divergences.
This paper reviews constant-roll inflation, a phenomenological model offering exact solutions compatible with observational constraints and capable of enhancing the curvature power spectrum for primordial black hole formation, presented as a tribute to Alexei Starobinsky.
This paper establishes a non-perturbative framework linking wormhole geometries embedded in realistic dark matter halos to observable scalar-wave signatures, revealing how the interplay of throat geometry and halo curvature induces evanescent regions, mode suppression, and frequency-dependent localization.
The paper argues that the black-hole remnant scenario emerges naturally from Hawking's original computations without requiring additional assumptions.