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 derives a semiclassical balance law for the Bondi mass in 3+1 dimensional black hole evaporation, demonstrating that the radiative energy flux receives a positive quantum correction dependent on the entanglement entropy of Hawking radiation, which differs from the standard Fulling-Davies formula and extends insights from 2d dilatonic models.
This paper demonstrates that incorporating spatial curvature and dynamical dark energy into cosmological models, while employing a symmetric extension to handle negative effective neutrino masses, significantly alleviates the tension between current cosmological upper bounds and the terrestrial lower limit on the sum of neutrino masses by reducing the statistical discrepancy from to approximately .
This paper proposes a general scheme for reconstructing bulk geometric quantities in static pure AdS space by utilizing a continuous network of "PEE threads," derived from partial entanglement entropy, whose intersection density with homologous surfaces reproduces the Ryu-Takayanagi formula and embodies the Crofton formula.
This paper utilizes the symbolic tool Cadabra to explicitly derive and analyze the Hamiltonian equations of motion for quadratic gravity, including their linearized longitudinal-transverse decomposition, comparison with covariant field equations, and application to homogeneous and isotropic configurations.
This paper proposes an AdS/NCFT duality where networks are holographically described by branched spacetimes with "Net-branes," demonstrating how junction conditions enforce energy conservation, deriving gravitational spectra and entanglement properties, and linking network complexity to bulk geodesics.
This study investigates neutron stars admixed with finite-temperature Bose-Einstein condensate dark matter, finding that even modest dark matter fractions reduce stellar mass, radius, and tidal deformability, thereby shifting theoretical predictions to better align with GW170817 observations depending on the underlying nuclear equation of state.
This paper investigates whether small dark matter clumps passing near Earth could generate the gravitational-wave glitches observed in LIGO/Virgo/KAGRA data, finding that while most glitches are inconsistent with this hypothesis, the analysis establishes the first direct upper limits on the local over-density of such dark matter clumps.
This paper investigates particle creation during non-singular gravitational collapse where quantum gravity induces a bounce, demonstrating that the resulting spontaneous emission probability deviates from standard Hawking radiation and implies a non-thermal spectrum, while also suggesting this process could resolve shell crossing singularities.
This paper constructs complete families of regular, asymmetric wormhole solutions in Einstein-Dirac-Maxwell theory that connect two identical Minkowski spacetimes, demonstrating that their physical properties, including the possibility of negative ADM mass, are fully determined by the throat parameter, spinor frequency, and coupling constant.
This paper evaluates whether gravity and phenomenological models can resolve the Hubble tension while remaining consistent with DESI DR2 BAO data, finding that while an exponential model slightly alleviates parameter space tensions, no theoretically motivated solution successfully reconciles the Hubble tension with all observational datasets, particularly local measurements.