4428 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 a universal, closed-form expression for the dynamical Love numbers of Schwarzschild black holes to all orders in gravity for any spin and multipole, revealing that the response factorizes into horizon absorption, near-zone running, and a far-zone dressed logarithm containing a universal tower of Riemann zeta values, a result independently verified via shell effective field theory up to .
This study demonstrates that the nested triangular (ET-Î) design of the Einstein Telescope outperforms the separated L-shaped (ET-2L) configuration in estimating binary black hole parameters, particularly during partial network operation, due to its superior redundancy which ensures multi-detector uptime and yields tighter constraints on luminosity distance and component masses.
This paper constructs an infinite set of exact, gauge-invariant Dirac observables for Gowdy cosmologies that remain regular at the big bang singularity and systematically connect the full nonlinear gravitational dynamics to a simpler Carroll-type gravity theory through an anti-Newtonian expansion.
This paper introduces a new statistic that exploits the asymmetry and fringes induced by gravitational lensing in signal-consistency tests to identify lensed gravitational waves that are typically missed by standard matched-filtering searches, thereby establishing a direct link between lensing observables and detection efficiency without requiring an expanded template bank.
This paper constructs a (2+1)-dimensional noncommutative BTZ gravastar within Gauss-Bonnet gravity by matching a noncommutative interior to a modified BTZ exterior via a thin shell, subsequently deriving the shell's equations of state, analyzing the satisfaction of energy conditions, and investigating the thermodynamic properties of the interior region.
This paper introduces a hybrid numerical method that efficiently generates stochastic realizations of primordial curvature perturbations in axion inflation, revealing significant discrepancies with previous approximations and enabling rapid computation of higher-order polyspectra for large-scale structure analyses.
This paper derives and validates analytical solutions for coupled Klein-Gordon equations in cosmology under small-field excursions, demonstrating that the system can be solved using Kummer's hypergeometric limit function and confirming these results through numerical calculations.
This study establishes that a late-time dark-matter particle-creation model, when constrained by observational data, yields a stable, physically admissible dark-energy-dominated accelerating attractor that reproduces the standard cosmic evolution sequence but asymptotically approaches a quintessence-like power-law expansion rather than a de Sitter state.
This paper proposes a linear response formalism that uses an eigenvalue of the Einstein tensor to systematically calculate leading-order corrections to black hole observables in modified gravity theories, thereby linking measurable deviations near the horizon to constraints on effective new physics models.
This paper presents the first causal, first-principles relativistic theory for the tidal excitation of nonrotating perfect-fluid stars, establishing a complete modal and nonmodal decomposition of the spacetime and fluid response into direct, quasinormal-mode, and late-time-tail sectors governed by explicit driven evolution equations.