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 demonstrates that a vast class of stationary, axisymmetric black hole solutions in general relativity and Einstein-Maxwell theory can be unified as members of the accelerating Kerr-Newman-NUT family embedded within backgrounds derived from its double Wick rotation, including a newly explored configuration of a Schwarzschild black hole in a generalized rotating and electromagnetic universe.
This paper constructs and analyzes two families of quantum soliton geometries in AdS that describe the backreaction of thermal fields via a brane setup in a four-dimensional AdS C-metric, demonstrating how positive-mass solutions replace horizons with smooth origins and establishing a thermodynamic first law within a two-brane framework.
This paper presents a theoretical framework for modeling weakly collisional plasmas in general relativity by deriving relativistic drift kinetic equations and introducing a new analytic Landau fluid closure that captures anisotropic heat flow and kinetic effects without relying on strong collisions, offering a complementary approach to fully kinetic simulations for interpreting horizon-scale black hole observations.
This paper analyzes the latest gravitational wave data to show that the revised, lower binary neutron star merger rate creates a significant tension with the observed rates of short gamma-ray bursts, r-process element production, and Galactic double neutron star populations, suggesting potential gaps in our understanding of these astrophysical processes.
This paper computes the stochastic gravitational wave background generated by parametric resonance of a spectator scalar field during reheating, deriving a master formula that predicts a detectable high-frequency signal () while validating the analytical framework against nonlinear lattice simulations to capture both superhorizon evolution and fragmentation effects.
This paper investigates quasinormal modes and greybody factors within a parametrized framework for modified gravity, analyzing their dependence on correction orders and polynomial powers while testing the validity limits of the proposed correspondence between these two phenomena.
This paper demonstrates that the weak-field limits of the Schwarzschild, Kerr, Reissner-Nordström, and Kerr-Newman black hole metrics can be reconstructed from quantum scattering amplitudes using the KMOC formalism, specifically revealing unique interference terms in the Kerr-Newman case that arise from combined gravitational and electromagnetic interactions.
This paper establishes a historical optical foundation for stationary vacuum Kerr--Schild spacetimes by demonstrating how a single complex optical seed, derived from expansion and twist, algebraically reconstructs the spacetime congruence and serves as the normalized zeroth-copy data that generates both the metric profile and the associated single-copy gauge field within the double-copy framework.
This paper extends the residue-based Robson-Villari-Biancalana (RVB) method to derive a general expression for black hole entropy in f(Q) gravity, demonstrating that residue-induced temperature corrections lead to deviations from the standard Bekenstein-Hawking area law for static, spherically symmetric configurations.
This paper demonstrates that while the Kerr-Schild double copy introduces an enlarged, infinite-dimensional residual symmetry structure in both Yang-Mills and gravity, a fundamental mismatch exists where the gravitational sector's apparent conformal symmetries are shown to be BRST-trivial, leaving only global isometries as physical symmetries, unlike the non-trivial infinite-dimensional algebra found in the gauge theory side.