3875 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 resolves discrepancies in the literature regarding the effective scalaron-photon coupling in gravity by demonstrating that the trace anomaly, arising from the transformation between Jordan and Einstein frames, cancels the diagrammatic contribution in the limit of light scalaron mass, thereby leading to a vanishing effective coupling and a suppressed decay rate into photons.
This paper critiques existing semi-classical and quantum gravity frameworks to propose a teleparallel approach based on coframe and spin-connection variables, arguing that encoding gravity in torsion offers a geometrically refined foundation for future quantum gravity investigations.
By applying redshift-dependent corrections for progenitor age to the Pantheon+ supernova catalogue, the study reveals that the universe's monopole deceleration parameter shifts to positive values, indicating cosmic deceleration while leaving the local dipole anisotropy unchanged.
This paper demonstrates that stationary scalar clouds around a rotating Kalb-Ramond BTZ black hole are jointly determined by the Kalb-Ramond parameter, rotation, and Robin boundary conditions, with the Kalb-Ramond parameter qualitatively altering the existence lines of these clouds by introducing nonmonotonic behavior for positive values and shifting the critical boundary parameters.
This paper develops a modified Teukolsky formalism to model gravitational wave generation and fluxes from extreme mass-ratio inspirals into non-rotating black holes within higher-derivative gravity theories, providing a foundational step for constructing waveforms in modified gravity that can also approximate comparable-mass binary systems.
This paper establishes a general framework for analyzing quantum scalar fields in warped geometries containing topological defects by decomposing curvature, separating field equations, and deriving normalized mode functions to evaluate the Hadamard two-point function in specific cases like global monopoles in AdS spacetime.
This paper demonstrates that evaporating black hole populations with finite-width mass distributions universally exhibit a characteristic power-law suppression in their induced gravitational wave backgrounds at late times, a phenomenon driven by evaporation dynamics rather than initial mass distribution details.
This paper provides a structural classification of linear Ricci-trace deformations of Einstein's equations, demonstrating that while common Rastall-gravity parametrizations are algebraically isomorphic, they only achieve operational equivalence under specific Newtonian calibration, and further distinguishes this class from Unimodular Gravity.
This paper introduces a new class of -type exact solutions in Finsler gravity that generalize known pp-waves and demonstrates that the observational signature of the resulting Finslerian gravitational waves on an interferometer is indistinguishable from that of standard gravitational waves in general relativity.
This paper investigates the validity of the Generalized First and Second Laws of thermodynamics in Loop Quantum Cosmology models with spatial curvature, analyzing entropy corrections and exploring the potential role of negative absolute temperatures in resolving thermodynamic violations.