2649 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 presents a realistic timing model for pulsars orbiting the supermassive black hole Sgr A*, incorporating post-Newtonian effects, light propagation delays, and Sgr A*'s proper motion to forecast parameter measurement precision and guide future searches with next-generation radio telescopes like the SKA.
This study demonstrates that while next-generation gravitational-wave observations of binary neutron star mergers can tighten constraints on nuclear empirical parameters, the presence of non-interacting fermionic dark matter is unlikely to be decisively detected or significantly bias these nuclear inferences due to inherent systematic modeling limitations.
This paper presents a quantization of unimodular gravity in the connection representation for a matter-free, flat cosmological model, demonstrating that while a positive cosmological constant yields wave functions vanishing at zero volume, a negative cosmological constant is incompatible with the required regularity and self-adjointness of the Hamiltonian operator.
This paper employs the high-precision Spectral Method to analyze the quasinormal modes of Planck stars within a scale-dependent gravity framework, revealing a complex oscillatory spectrum with unique features like Martini glass morphology and isolated overdamped modes that were previously undetected by lower-order approximation techniques.
This paper proposes a new modified cosmological model derived from a generalized entropy with non-separable microstate scaling, which introduces an effective dark energy sector capable of exhibiting quintessence-like, phantom-like, or crossing behaviors that ultimately stabilize to a cosmological constant while preserving the standard thermal history of the Universe.
The paper argues that all dynamical astrophysical black hole merger channels converge to a universal high-eccentricity distribution at LIGO/Virgo/KAGRA frequencies due to the large separation of scales between the gravitational-wave regime and the formation environment, a finding supported by analytical solutions that align with numerical studies.
This paper investigates how local physics emerges in perturbative quantum gravity on de Sitter space by constructing gauge-invariant relational observables that approximate local field algebras, revealing that while this approximation is limited near minimal spheres to logarithmic time intervals, it remains valid over arbitrarily large regions in the far future or past, including entire static patches.
This paper revisits the Newman-Unti-Tamburino (NUT) solution by establishing its uniqueness as the sole Petrov Type D vacuum metric with integrable principal null directions through a coordinate-free analysis of Newman-Penrose integrability conditions.
By merging black hole physics with extended Wigner's friend scenarios, this paper constructs a unified argument that closes the loophole for post-quantum theories by demonstrating that no such theory can consistently describe black hole physics without allowing an observer to experimentally falsify quantum predictions.
This paper demonstrates that incorporating higher-order curvature corrections (such as and ) into the Starobinsky inflationary model resolves its mild tension with recent P-ACT-LB-BK18 data while imposing new constraints on post-inflationary dynamics.