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 investigates the behavior of straight and wiggly cosmic strings in linearized Horndeski theory, demonstrating that a massive scalar field induces a screening effect that causes the solutions to approach those of general relativity.
This paper accelerates computationally expensive parameterized tests of general relativity using gravitational-wave data by applying relative binning to the TIGER framework, achieving a 10- to 100-fold reduction in analysis time while maintaining unbiased parameter recovery and accurate constraints on deviations from GR.
This paper proposes extending quantum mechanics to an enlarged Hilbert space that restores a fundamental symmetry between space-time and momentum-energy sectors, a dual-manifold structure that independently reproduces key cosmological phenomena such as dark energy and Hawking radiation.
This paper introduces and analyzes brachistochrone-ruled timelike surfaces in both Newtonian and relativistic spacetimes by generalizing the classical cycloidal brachistochrone to stationary Lorentzian manifolds via Finsler and Jacobi metrics, providing explicit examples in Minkowski and Schwarzschild geometries along with a numerical construction scheme.
This paper generalizes the Kerr-Schild gauge to non-null deformation vectors, demonstrating that such deformations yield finite curvature expansions and establishing that the resulting metric is Ricci flat if and only if the deformation vector is irrotational (and consequently geodesic) in the background spacetime.
This paper investigates mass inflation in regular black holes within quasitopological gravity by modeling the collision of null shells, revealing that significant amplification of curvature near the inner horizon requires shell intersections at radii exponentially closer to the horizon than the fundamental scale for macroscopic black holes, unlike in classical geometries.
This paper demonstrates that including quantum cross-correlation terms in the effective Hamiltonian of Brans-Dicke Bianchi I cosmology is essential for preventing unphysical divergences and ensuring consistent dynamics, revealing that these correlations smooth bounces, suppress or enhance anisotropy depending on the coupling parameter, and encode crucial Planck-scale information with implications for quantum gravity phenomenology.
This paper investigates massive scalar perturbations around the Dymnikova regular black hole using time-domain integration and improved WKB methods, revealing that increasing field mass leads to higher oscillation frequencies, reduced damping rates indicative of quasi-resonances, and suppressed grey-body factors, thereby offering distinctive signatures for probing near-horizon quantum corrections.
This paper investigates how a macroscopic gap and a large number of degenerate ground states modify the spectral form factor in random matrix models, revealing that the disconnected contribution dominates at late times while the connected ramp arises from a universal sine-kernel in the non-degenerate sector, with implications for BPS states in gravity and the transition to a plateau.
This paper investigates the thermodynamic properties and phase transitions of charged anti-de Sitter black holes in ghost-free dRGT massive gravity coupled to exponential nonlinear electrodynamics, revealing a rich phase structure that includes van der Waals-like transitions, critical behavior, and reentrant phase transitions driven by the interplay between graviton mass and electromagnetic nonlinearity.