3949 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 constructs a perturbative renormalization group improved black hole solution and investigates its quasinormal modes under scalar field perturbations in both Schwarzschild-de Sitter and Schwarzschild-anti-de Sitter backgrounds, employing multiple numerical methods to demonstrate consistent results and successful waveform reconstruction.
This paper forecasts that a three-band gravitational-wave network combining Taiji, the Lunar Gravitational-wave Antenna, and the Einstein Telescope will significantly outperform two-detector configurations in constraining cosmological parameters, achieving sub-percent precision on the Hubble constant and competitive constraints on dark energy through the observation of intermediate-mass black hole binaries.
This paper establishes that in specific modified gravity theories characterized by a parameter , all vacuum Bianchi type IX solutions converge to a Mixmaster attractor composed of Bianchi type I and II states, thereby proving an analogue of Ringström's theorem and demonstrating that, unlike in general relativity, no solutions converge to locally rotationally symmetric states.
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.