2593 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 limitations of current pulsar timing array background estimation methods, demonstrating that sky and phase scrambling techniques suffer from rapid saturation which restricts the number of quasi-independent realizations and complicates the reliable assessment of high-significance gravitational wave detections.
This paper presents a new class of smooth, nonsingular, and geodesically complete inflationary models that resolve the initial singularity by utilizing controlled, localized violations of the null energy condition, thereby demonstrating that eternal inflation can arise from a past-eternal universe without requiring a Big Bang beginning.
This paper argues that detecting stimulated absorption of single gravitons in massive quantum resonators, correlated with LIGO gravitational wave observations, would provide the first experimental window into quantum gravity by probing the quantized interaction between gravity and matter, drawing parallels to the historical development of early quantum theory.
This paper demonstrates that using comprehensive noise models in pulsar timing analyses, even when they include noise sources not actually present in the data, prevents systematic errors from biasing the estimation of gravitational-wave background parameters without introducing unnecessary prior-induced bias.
This paper demonstrates that for non-compact Lorentzian manifolds satisfying the "no observer horizons" condition, the group of time orientation-preserving isometries acts properly, leading to the existence of an invariant Cauchy temporal function and a structural decomposition of the isometry group into a compact subgroup and a time-translation component restricted to the trivial group, , or .
This paper extends the -symmetry analysis of supersymmetric D-brane probes in attractors to include stationary, non-static worldlines with angular momentum, revealing new -BPS configurations that saturate a generalized energy bound and enrich the spectrum of supersymmetric states relevant to black hole microstate counting and holography.
This paper derives a gauge-invariant local classical action for Lie-Poisson electrodynamics that resolves the longstanding challenge of formulating gauge theory on -Minkowski space-time by yielding deformed Maxwell equations as Euler-Lagrange equations for any Lie-algebra-type noncommutativity.
This paper presents the first exact analytical solution to the DeWitt-Brehme-Hobbs equation for a charged mass interacting with copropagating electromagnetic and gravitational plane waves, demonstrating how gravitational waves can qualitatively alter electromagnetic radiation-reaction effects.
Dedicated to the memory of Dharam Ahluwalia, this paper provides a concise overview of the key characteristics of Carroll spinors.
This study demonstrates that stochastic kicks in ultra-slow-roll inflation models create spiky compaction profiles that can enhance primordial black hole abundance by up to 36 orders of magnitude and significantly shift their mass function, though convergence issues necessitate further investigation into collapse criteria for such profiles.