3256 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 constructs static, spherically symmetric charged black hole solutions in quasi-topological gravity coupled to Born-Infeld electrodynamics, revealing that while certain models yield regular black holes with an anti-de Sitter core, others develop curvature singularities at finite radii.
This paper presents an optical framework that reformulates gravitational lensing using an effective refractive index to derive analytical expressions for deflection angles and Einstein radii in both standard general relativity and various modified gravity theories, thereby providing an accessible educational tool for undergraduate students to explore contemporary research through ray-tracing simulations.
This paper demonstrates that classical-quantum dynamics can emerge generically as an effective, non-Markovian description of fully quantum systems undergoing decoherence, implying that experimental agreement with such models does not definitively prove the mediator is fundamentally classical.
This paper employs Markov Chain Monte Carlo analysis with recent high-precision observational datasets to demonstrate that a canonical exponential quintessence model remains statistically comparable to the standard CDM cosmology while successfully reproducing cosmic acceleration and satisfying key physical viability conditions.
This paper proposes a Hamiltonian composite theory of gravity derived from local Lorentz gauge symmetry and freely falling frames, demonstrating that it yields an exact black-hole solution, possesses only four physical degrees of freedom for planar gravitational waves, and provides a framework for quantization.
This paper reviews recent results on the geometrization of asymptotic flatness and its associated invariants (such as mass, momentum, and center of mass) within asymptotically Euclidean relativistic initial data sets, specifically examining their relationship to geometric asymptotic foliations like CMC and STCMC.
This paper proposes using curvature-consistency tests and a new null test to distinguish between standard FLRW cosmological models and alternative scenarios characterized by deviations in optical properties or large-scale expansion, thereby offering a robust method to probe and rule out various cosmological models in light of current and future observational data.
This paper revises the Loop Blow-up Inflation model by demonstrating that generic string loop corrections to the Kähler potential transform the inflationary dynamics from a non-perturbative regime to a power-law plateau, thereby generating updated cosmological predictions that remain consistent with the latest CMB and BAO observational constraints.
This paper presents a gauge-independent general relativistic derivation showing that optically levitated sensors in Fabry-Pérot cavities exhibit an asymmetric gravitational wave response maximized near the input mirror, a configuration that simultaneously suppresses noise coupling from input-mirror displacements to establish key design principles for high-frequency gravitational wave detectors.
This paper establishes theoretical and observational constraints on dynamical Chern-Simons gravity by analyzing causality violations in gravitational wave propagation and deriving tighter bounds on its coupling constant through a UV completion involving fermions, ultimately suggesting that dCS corrections to macroscopic gravitational dynamics are likely negligible.