3919 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 calculates the leading-order corrections to gravitational wave displacement and spin memory effects caused by a positive cosmological constant in de Sitter spacetime, finding that these corrections are proportional to and currently too small for detection.
This paper reassesses the reported cosmic dipole anomaly in the CatWISE2020 quasar catalog using a comprehensive simulation framework, finding that while the statistical significance of the discrepancy decreases from to approximately –, the anomaly remains unexplained by clustering or survey geometry alone.
The authors argue that the claim by Aziz and Howl that classical gravity can entangle quantized matter fields is incorrect, demonstrating that their perturbative results are inconsistent with a more fundamental, non-perturbative derivation.
By using holographic realizations of the Araki-Lieb inequality, this paper demonstrates that typical pure states in large holographic CFTs exhibit a characteristic factorization between ultraviolet and infrared scales, implying that black holes can be effectively isolated from an asymptotic "corona" and providing a generalized framework for the Eigenstate Thermalization Hypothesis.
This paper derives the fourth post-Newtonian conservative map between the constants of motion and fundamental frequencies for nonspinning compact binaries on quasi-elliptic orbits, providing a resummed eccentricity enhancement function and validating the results against analytical self-force predictions for the orbit-averaged redshift invariant.
This paper derives dimension-dependent upper and lower bounds on the photon sphere radius for static, spherically symmetric, asymptotically flat black holes in -dimensional Einstein gravity, generalizing known four-dimensional results to higher dimensions under specific energy conditions.
By applying the Misner-Sharp formalism to model the non-equilibrium, general-relativistic collapse of self-interacting dark matter halos, this study finds that intense heat flux during the late stages of collapse limits the resulting seed black hole mass to approximately of the halo mass, suggesting that baryonic processes are likely necessary to explain the existence of early supermassive black holes.
This article constructs a graph model for covariant holographic entropies in time-dependent spacetimes by identifying a geometric condition that incorporates exposed regions and prevents unphysical shortcuts, thereby proving the equivalence between covariant and static holographic entropy cones and paving the way toward a complete covariant construction.
This paper presents numerical methods and specific solutions to Einstein's equations to explore cosmological models on compact, non-orientable spatial manifolds with varying curvatures.
This paper investigates interacting dark energy models using the CPL parametrization, finding that while an interaction term proportional to dark energy density () provides a slightly better fit to observational data than the non-interacting model, the CDM model remains statistically preferred due to its simplicity.