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 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.
This paper presents a covariant and gauge-invariant framework for analyzing radial adiabatic perturbations in self-gravitating imperfect fluids, comparing predictions from various thermodynamic theories and establishing an upper bound on the maximum compactness of dynamically stable stars with anisotropic pressures.
This paper demonstrates that chaotic migration driven by turbulent gas torques in accretion disks can induce detectable gravitational wave dephasing in LISA extreme mass ratio inspirals under specific conditions, highlighting the critical need for magnetohydrodynamic simulations to accurately model these effects beyond standard laminar disk assumptions.
This paper proposes that combining future Hz-band Earth-term detections of supermassive black hole binaries with historical nHz-band "gravity echoes" recorded by pulsar timing arrays will create a unique temporal baseline, enabling precise sky localization, direct measurement of long-term inspiral rates, and coherent tracing of post-Newtonian evolution across kiloparsec baselines.
This paper demonstrates that an ultralight vector dark matter field, by breaking spatial isotropy and inducing mixing between scalar and tensor perturbations in a Bianchi I geometry, acts as a source for a stochastic cosmological gravitational wave background, the spectrum of which is computed using a modified version of the CLASS code.
This paper derives exact expressions for the factors in the Hadamard form of the retarded Green function for the Teukolsky equation on Schwarzschild spacetime by utilizing a conformal direct-product metric to obtain a separable direct part and its multipolar modes, ultimately providing an improved representation of the Green function near coincidence for gravitational perturbations.
This paper investigates the late-time evolution of an anisotropic Bianchi-I universe containing radiation and electromagnetic fields within asymptotically safe gravity, revealing that quantum effects soften anisotropy in radiation-dominated scenarios while the presence of a cosmological constant ultimately drives the universe toward an isotropic de Sitter phase, whereas its absence leads to a persistent Kasner-type anisotropic regime.
This paper presents a unified relativistic perturbation framework to calculate frequency shifts in gravitational waves emitted by axion clouds around rotating black holes, accounting for self-interaction effects that populate multiple superradiant modes and revising the treatment of self-gravity to improve predictions for next-generation observations.