4035 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 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.
This paper investigates radial oscillations in nucleonic, quarkyonic, and hybrid neutron stars by incorporating out-of-equilibrium chemical effects, revealing that this approach avoids physical singularities, elucidates dynamic mode responses, and extends stable stellar branches to accommodate higher-mass configurations like PSR J0740+6620.
This study investigates the impact of Energy-Momentum Squared Gravity (EMSG) on neutron star properties across various equations of state, utilizing numerical solutions and observational constraints to determine how the theory's free parameter influences mass-radius relations, phase transitions, and the fundamental-mode (-mode) oscillation frequency.