3151 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 and investigates the properties of -boson stars, a generalization of standard boson stars parameterized by an angular momentum number , within spacetimes characterized by a negative cosmological constant that are asymptotically anti-de Sitter.
This paper proposes and validates a novel chaos indicator called time-reversed Shannon entropy (TRSE), which distinguishes chaotic from regular dynamics in non-integrable curved spacetimes by quantifying time-reversal symmetry breaking, and demonstrates its effectiveness alongside a refined particle-pair mutual information (MIPP) metric through numerical simulations in Kerr and Schwarzschild-Melvin black hole geometries.
This paper extends Jacobson's thermodynamic derivation of gravity to non-Riemannian geometries, revealing that while the standard Einstein-Hilbert action is generally excluded, a theory combining it with a quadratic torsion vector term emerges as the unique consistent alternative under specific conditions, whereas full non-Riemannian cases with canonical energy-momentum tensors lead to mutual inconsistency between thermodynamic and Lanczos-Lovelock approaches.
This paper presents a perturbative analytical model of gravitational waves in a Bianchi IV universe using the proper-time method, deriving analytical solutions for the metric components and proving the stability of both the perturbative and exact wave solutions.
This paper investigates stellar dynamics within gravity, demonstrating that the theory yields second-order field equations free of ghosts and utilizing dynamical systems analysis to reveal that the autonomous isotropy equation possesses generally stable invariant submanifolds.
This paper demonstrates that static, spherically symmetric black hole solutions in New General Relativity containing matter or electromagnetic fields are only mathematically possible in parameter regimes that suffer from fundamental theoretical pathologies, thereby implying the theory admits no physically meaningful black holes distinct from those in General Relativity.
This paper proposes a unified resolution to the factorization, information, and closed universe problems in semiclassical gravity by introducing a modified holographic dictionary that enables the construction of an extended gravitational path integral capable of satisfying the Page curve and incorporating baby universe states.
This paper presents a practical ringdown analysis pipeline for future space-borne gravitational wave detectors that integrates the FIREFLY acceleration algorithm with time-delay interferometry observables, achieving a ~200-fold speedup in analyzing multi-mode signals from massive black hole mergers to enable efficient and scalable tests of strong-field gravity.
This paper proposes that the concept of Quasilocal Probability in curved spacetime induces horizon-driven non-Hermitian dynamics in black hole ringdowns, producing a unique, correlated set of observational signatures that can be distinguished from generic modified gravity effects and tested with upcoming gravitational wave data to probe the fundamental nature of quantum mechanical Hermiticity.
This paper applies symbolic regression to the GWTC-4 binary black hole catalog to derive compact, interpretable analytic formulae for key population properties, such as merger-rate evolution and spin-mass correlations, thereby replacing opaque phenomenological models with transparent, differentiable laws that facilitate robust physical diagnostics and rapid downstream calculations.