2489 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 utilizes Event Horizon Telescope observations of M87* and Sgr A* to constrain the quantum correction parameter of rotating holonomy-corrected black holes, demonstrating that these loop quantum gravity-inspired models remain viable alternatives to classical Kerr black holes by producing closed shadow rings consistent with current data.
This paper proposes a phenomenological model within Tsallis' statistical framework that introduces an effective chemical potential for non-relativistic matter, linking it to an Unruh-like temperature to derive a modified Hubble parameter that significantly enhances sensitivity to thermostatistical assumptions and potentially addresses the Hubble tension.
This paper presents a fully relativistic derivation of the elastic response of a thin rectangular plate to gravitational waves, yielding explicit closed-form solutions for induced displacements and energy deposition in materials with a vanishing Poisson ratio, alongside the computation of secondary gravitational wave emission from the oscillating plate.
This study demonstrates through three-dimensional simulations that while the low- instability robustly occurs in rapidly rotating core-collapse supernovae regardless of the nuclear equation of state, its specific multimessenger signatures—particularly the gravitational wave frequency—vary systematically with the equation of state, offering a potential diagnostic tool for probing dense-matter physics.
This paper investigates Loop Quantum Gravity-inspired scenarios where stable Planckian remnants of evaporating primordial black holes constitute Dark Matter, identifying a specific mass range ( kg) that naturally reheats the Universe and yields distinct observational signatures in gravitational waves and relativistic degrees of freedom.
This paper demonstrates that interactions between ghost fields and multi-particle states prevent the existence of free asymptotic ghost states by rendering their negative-norm one-particle states indistinguishable from positive-norm superpositions, thereby confining observable ghost propagation to timescales shorter than their inverse width.
This study utilizes energy-dependent Monte Carlo neutrino transport to evaluate the relative importance of various neutrino-matter interaction channels in binary neutron star merger remnants, revealing that inelastic electron scattering significantly impacts heavy-lepton neutrino thermalization and that pair annihilation rates are substantially higher in cold, low-density regions than previously estimated.
This paper proposes that a high-quality axion protected by a discrete gauge symmetry can naturally resolve the isocurvature problem in high-scale inflation by inducing a large effective axion mass during inflation, thereby simultaneously addressing the axion quality problem and predicting testable parameter spaces for future experiments.
This paper establishes weighted decay criteria for the profile of plane gravitational waves to distinguish between strongly, weakly, and non-asymptotically free motions, demonstrating that ordinary asymptotic freedom requires more than simple profile decay and that weak asymptotic freedom involves a drift correction that preserves displacement memory as an intrinsic curvature effect.
This paper argues that the internal norms of rigour in mid-twentieth-century theoretical physics prioritized enabling concrete calculations over abstract truth, a thesis supported by a historical case study showing that the crucial advancement in the development of the Wheeler-DeWitt equation (1962–1967) was not the equation's initial statement but its subsequent "rigorisation" through the definition of an inner product.