3949 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 investigates the thermodynamics and binary merger dynamics of Simpson-Visser-regularized Anti-de Sitter black holes, deriving a consistent entropy formula, analyzing non-trivial phase transitions dependent on the regularization parameter, and revealing a non-monotonic behavior in post-merger mass constraints compared to standard black holes.
This paper demonstrates that while particle-mesh approximations and MOND modifications destabilize the three-body system by breaking fundamental symmetries and conservation laws, a specific MOGA modification of gravity can actually stabilize the system.
This paper investigates the semi-classical backreaction of a scalar field in de Sitter spacetime using Thermofield dynamics, revealing that the resulting bulk equation yields a blue-tilted power spectrum () for transient late-time modes while establishing a holographic dual to the Sp(N) model in three dimensions via the computed CFT two-point function and flow equation.
This paper investigates the thermodynamics, particle dynamics, quasiperiodic oscillations, and shadow characteristics of a regular black hole coupled with nonlinear electrodynamics and surrounded by perfect fluid dark matter, utilizing observational data from specific X-ray binaries to constrain its physical parameters.
This paper investigates the divergence issues in bilinear products for Schwarzschild black-hole quasinormal modes on hyperboloidal foliations, proposing regularization procedures and flux-based alternatives to define finite orthogonality relations and explicitly compute excitation factors.
This paper investigates charged rotating black holes in Kalb-Ramond gravity to derive constraints on the Lorentz-violating parameter and electric charge by comparing theoretical black hole shadow predictions with Event Horizon Telescope observations of M87* and Sagittarius A*.
This paper demonstrates that scalar perturbations on Kaigorodov pp-wave spacetimes exhibit zero-temperature dissipation through a discrete, gapped quasinormal mode spectrum, establishing that horizonless geometries can act as geometric absorbers without requiring an event horizon or entropy.
This paper demonstrates that in exotic compact object spacetimes like dyonic black holes, multiple coexisting branches of bound orbits can share identical topological indices yet produce radiatively distinct gravitational wave signatures, offering a novel observational probe for physics beyond general relativity.
This study demonstrates that even at its current modest sensitivity, KAGRA significantly enhances the sky localization of compact binary coalescences within the global detector network by providing geometric complementarity and breaking degeneracies, with performance improving substantially as its sensitivity increases to support effective electromagnetic follow-up.
This paper introduces a covariant orthogonality diagnostic to validate approximate analytical models of electromagnetic radiation reaction in Schwarzschild spacetime, demonstrating that combining the conservative Smith-Will and dissipative Gal'tsov tail terms significantly suppresses violations of four-velocity normalization compared to using the conservative term alone.