3826 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 introduces the Multi-messenger Cross-Correlation (MC) framework, a novel analysis pipeline that leverages coincident detection of gravitational waves and multi-band electromagnetic signals to identify bright sporadic sources within the stochastic gravitational-wave background while significantly reducing false alarm rates.
This paper establishes a purely differential geometric framework demonstrating that the Gaussian curvature of unstable null orbits serves as a direct signature of black hole phase transitions, exhibiting swallowtail-like multivalued behavior during first-order transitions and heat-capacity-like divergence at second-order critical points.
This paper establishes a no-go theorem demonstrating that the most general bumblebee vector-tensor theory cannot simultaneously support a homogeneous and isotropic cosmological background, avoid extra propagating degrees of freedom, and maintain healthy linear perturbations, as enforcing the correct number of modes inevitably leads to an infinitely strongly coupled scalar sector.
This paper establishes the gauge-invariant status of entire-function regulators in nonlocal quantum field theory by demonstrating, within the background-field formalism, that these regulators act as multiplicative form factors in momentum space to provide exponential ultraviolet damping without introducing new singularities.
This paper demonstrates that atomic clock measurements, combined with Lunar Laser Ranging and photon trajectory data, provide the strongest constraints to date on scalar tensor dark energy, effectively ruling out most locally coupled models and forcing viable theories toward near-Lambda CDM behavior or fully decoupled fields.
This paper unifies three distinct black hole thermodynamic classification schemes—geometric, topological, and complex—by demonstrating that they are precisely mapped onto one another through the critical point structure of the temperature curve, thereby simplifying the analysis of thermal stability and phase transitions.
This paper proves the Penrose conjecture for smooth, asymptotically flat initial data sets in three dimensions that satisfy the dominant energy condition and a 2-convexity condition on the second fundamental form, utilizing the -inverse mean curvature flow and a specific monotonicity formula.
This paper demonstrates that while classical, positive-frequency Dirac fields can violate the averaged null energy condition, they fail to support fully traversable, asymptotically flat wormhole geometries, as numerical searches yield only partial solutions or fail to satisfy the necessary conditions for reflection-symmetric throats.
This paper derives a microscopic electromagnetic membrane paradigm for black holes from matrix quantum mechanics, demonstrating how tachyonic condensation of bifundamental modes couples the horizon to the exterior field to yield Ohmic conductivity that saturates the maximal absorption bound imposed by unitarity.
This paper investigates the excitation region of Kerr black hole quasinormal modes by combining analytical Stokes geometry analysis with numerical convergence tests to demonstrate that the effective excitation radius depends on the overtone number, differing from the light ring and approaching the outer horizon in the extremal limit.