2693 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 proposes and analyzes a two-oscillator model for black hole evaporation, demonstrating that coupled harmonic oscillators with opposite-sign Hamiltonians can qualitatively reproduce key features of energy exchange and entanglement generation between geometric degrees of freedom and Hawking radiation.
This paper computes the static tidal response of unspinning charged black holes by generalizing Love numbers to Love matrices, revealing that quantum corrections induce a running behavior governed by the gauge coupling beta function which saturates in the strong-field regime, thereby offering a potential gravitational-wave probe for nearly-extremal magnetic black holes in dark sectors.
This paper proposes a minimal, predynamical localization criterion based on long-time stability under structural fluctuations to demonstrate that while fermionic modes in supersymmetric theories can form stable asymptotic states, scalar modes generically undergo decoherence, thereby explaining how an asymmetric observable particle spectrum can emerge without invoking specific supersymmetry-breaking mechanisms or new interactions.
This paper investigates how Hawking radiation in Schwarzschild spacetime influences tripartite quantum steering and its asymmetry across different mode accessibility scenarios, revealing that while radiation generally disrupts steering in fully accessible systems, it can paradoxically enhance steering in partially accessible configurations, thereby establishing observable signatures of black hole effects on quantum correlations.
This paper proposes a single-field inflationary model based on an inverse exponential potential that successfully fits current observational data and is extended with a steep exponential term to facilitate a viable reheating phase with a maximum temperature of approximately .
This paper employs reduced phase space quantization with the Misner--Sharp--Hernandez mass to derive discrete spectra for Schwarzschild--de Sitter black hole areas and masses, ultimately demonstrating that the resulting entropy for both event and cosmic horizons exhibits a robust logarithmic correction to the Bekenstein--Hawking term.
This paper demonstrates that non-relativistic holographic systems coupled to torsional Newton-Cartan geometry exhibit a universal shear subdiffusion mode with a quartic dispersion relation, a finding established through both analytical matched asymptotic expansions and numerical quasinormal mode calculations.
This study investigates the macroscopic properties and universal relations of proto-neutron stars within Energy-Momentum Squared Gravity, revealing that while thermodynamic variables and the modified gravity parameter significantly alter individual stellar characteristics, the underlying correlations between these properties remain robust and largely unaffected.
This paper investigates the cosmic evolution and expansion of the universe within a Lorentz-violating framework driven by Tsallis holographic dark energy and a spontaneously symmetry-breaking Bumblebee field, offering an alternative perspective on the Hubble tension by analyzing the Hubble parameter's evolution from the early universe to the present epoch.
This paper proposes that black hole evaporation is a topological tunneling process between spacetimes with distinct Euler characteristics, driven by a Gibbons-Hawking-York boundary term that generates a quantum atmosphere of photons and potentially stabilizes the black hole thermodynamically.