4428 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 analyzes scattered light noise caused by dust particles on the vacuum pipe baffles of the Einstein Telescope, quantifying the maximum allowable particle density and establishing cleanliness guidelines for assembly to ensure the detector's high-sensitivity performance.
This paper combines analytical and numerical studies to demonstrate that Vainshtein screening in Horndeski gravity is less effective in core-like dark matter halos, leading to observable biases between different mass proxies that can serve as a test for modified gravity on halo scales.
This paper generalizes previous findings on cosmological solutions in Bianchi I models with non-minimal kinetic coupling to include fully anisotropic scale factors, demonstrating that despite non-standard early-time behavior and the absence of a Kasner metric, the universe still undergoes isotropization and transitions to inflation while avoiding ghost and Laplace instabilities.
This paper proposes a parameter-free model of slow-roll inflation in metric-affine gravity, where the Starobinsky term is replaced by the square of the invariant scalar curvature, yielding a healthy scalaron with a plateau-like potential that successfully predicts inflationary observables consistent with current data and within reach of future B-mode measurements.
This paper demonstrates that fully nonlinear evolutions of a spherically symmetric Einstein–Maxwell–charged scalar system can form near-extremal black holes from regular superextremal initial data, with key properties like charge-to-mass ratios and critical scaling recoverable from observables at future null infinity.
This paper investigates why numerical relativity simulations of dust collapse often fail before primordial black hole formation, demonstrating that adapting lapse slicing equations and implementing spatially varying shift damping to address shell-focusing instabilities significantly improves simulation stability and proximity to black hole formation.
This paper demonstrates that while low-order orbital resonances in extreme mass ratio inspirals provide sensitive local diagnostics of conservative black hole environments and anisotropic mass distributions, their utility for unique tomography or detector-level parameter recovery is limited by strong ill-conditioning and alignment with orbital nuisance directions.
Motivated by recent DESI results suggesting a finite universe lifetime via a "Big Crunch," this paper conjectures that the universe may be configured to prevent the black hole information paradox from ever occurring in reality by ensuring black holes evaporate only after the universe's end, thereby deriving a lower mass bound for black holes based on cosmic longevity.
This paper establishes a non-perturbative classical double copy between complexified SU(2) Yang-Mills theory and four-dimensional conformally flat gravity by identifying the gauge potential with the chiral spin connection, thereby unifying gauge and gravitational fields through a "doppelgänger" framework that maps field strengths to curvature components even in the presence of constant scalar curvature and matter sources.
This paper demonstrates that, under the assumption of positive-mass rigidity and for solutions perturbatively connected to general relativity, the static, asymptotically flat black hole in Lovelock gravity is uniquely determined by its mass and is spherically symmetric, thereby extending the black hole uniqueness theorem beyond Einstein's equations.