4428 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 proposes that the inflationary cosmological constant of the early universe can be derived from the principle of maximum entropy, suggesting that the universe emerges from a minimum entropy state and evolves toward a 4-dimensional de Sitter space with a specific maximum entropy value.
This paper investigates the entanglement entropy of Hawking radiation from near-extremal Reissner-Nordström black holes under a specific mass-charge constraint, demonstrating that for certain scaling parameters, the entropy remains finite and avoids the explosive divergence seen in Schwarzschild black holes as long as the mass exceeds the Planck scale.
This paper investigates how massive Kaluza-Klein modes in the 2D effective theory of charged black holes induce a charge-dependent correction to the graviphoton kinetic term via tree-level mixing, which becomes parametrically significant near extremality, while one-loop corrections remain independent of the charge.
This paper demonstrates that exceptional points and eigenstate hysteresis arise intrinsically within the quasinormal-mode spectrum of Kerr-Newman black holes, utilizing a hyperboloidal formulation and Chebyshev pseudospectral method to locate four such points near extremality and confirm mode exchange via quasistatic loops.
This paper introduces a regularized and highly efficient method for generating eccentric and quasicircular effective-one-body gravitational waveforms by replacing singular orbital parameters with Cartesian eccentricity vector components and pre-tabulating waveform mode coefficients, achieving speed-ups of up to 300× while maintaining high accuracy across the full range of eccentricities.
This paper demonstrates that the all-sky all-frequency gravitational-wave radiometer search systematically underestimates the strength of continuous-wave sources due to orientation-dependent polarization effects, deriving a universal average projection factor of and showing that this necessitates significantly higher upper limits on strain amplitude for sub-threshold candidates.
This paper establishes the existence of linearly stable and causal BDNK hydrodynamic frames for arbitrary equations of state and transport coefficients by employing Routh-Hurwitz simplification and telegrapher factorization to provide concrete examples, map neutral-to-charged fluid frames, and introduce an AI protocol for discovering such frames in any hydrodynamic theory.
This paper presents the first 3D lattice simulations of magnetic monopole production from a first-order phase transition, establishing quantitative relationships between initial conditions and residual abundance while characterizing their associated magnetic and gravitational wave spectra, ultimately concluding that such monopoles cannot be the origin of primordial cosmic magnetic fields due to blazar constraints and determining their allowed mass range under Parker and dark matter bounds.
This paper constructs the Kaluza-Klein electric dressing of the Tomimatsu-Sato vacuum spacetime by uplifting and boosting it to five dimensions, revealing a solution with a nontrivial dilaton that preserves the seed's quadrupole excess, exhibits a specific gyromagnetic ratio, and introduces a curvature-singular boundary where the Kaluza-Klein circle becomes null, thereby strengthening causality violations near the rod while keeping the horizons uncharged.
This paper proposes and applies a framework to coherently combine gravitational-wave observations from 28 binary black hole mergers to test general relativity in the high-curvature regime, finding no evidence for deviations while demonstrating how such a population-level analysis can distinguish genuine physics beyond GR from systematic waveform errors.