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 investigates the horizon structure, constrained thermodynamics, and geodesic observables of an effective non-commutative Kerr-like black hole, demonstrating how non-commutative deformation modifies the radial geometry, shifts photon and particle orbits inward, reduces the black hole shadow, and alters thermal stability while preserving geodesic separability.
This paper compares two distinct constructions for dynamical corrections to Wald entropy in higher-derivative gravity—the boost-symmetry-based and the covariant phase-space —clarifying their fundamental differences and developing an algorithm to derive the former from the latter, which is demonstrated using a Riemann-squared theory example.
This paper investigates hydrodynamic obstructions in non-conformal first-order phase transitions, revealing that such dynamics significantly constrain admissible bubble wall velocities and exclude certain detonation solutions, thereby potentially suppressing the gravitational-wave signals generated by these events.
Using relativistic -body simulations, this study demonstrates that kinetic gravity braiding models produce distinct, scale-dependent deviations in cosmological gravitational probes—particularly in the ISW-RS effect and weak lensing convergence—ranging from a few to tens of percent compared to -essence models, thereby highlighting the necessity of including nonlinear effects for accurate theoretical predictions.
This paper establishes an equivalence between homogeneous and isotropic linearized gravity and the Caldeira--Leggett model, thereby enabling the derivation of a generalized Langevin equation for metric perturbations and providing a natural framework for reduced quantization and stochastic gravitational dynamics.
This paper proposes a general model based on minimal assumptions and statistical combinatorial counting of Planck-scale horizon cells to uniquely derive the black hole area law entropy along with a specific fixed logarithmic correction term.
This paper presents a specialized GPU-native nested sampling kernel that achieves real-time gravitational-wave parameter estimation for binary neutron star signals, reducing median inference times to as little as 89 seconds on a single GPU by leveraging Slice-within-Gibbs mixing and heterodyning techniques.
This paper provides a pedagogical introduction to non-linear perturbation theory for cosmological large-scale structure, specifically developing the Effective Field Theory framework from scratch to model galaxy clustering, address the limitations of Standard Perturbation Theory, and incorporate galaxy bias and redshift-space distortions for undergraduate and beginning graduate students.
This paper re-establishes the integrability of the hierarchy through diverse structural methodologies, including bi-Hamiltonian and Lie-Poisson frameworks, while demonstrating its relationship to the case via a flat limit and identifying its connection to the coadjoint orbits of for energy-dependent Schrödinger operators.
This paper demonstrates that extending monomial -attractor models to include binomial potentials can resolve tensions with recent CMB and DESI data by producing larger scalar spectral indices and introducing a time-dependent equation of state during reheating, thereby challenging the validity of assuming a uniquely determined reheating equation of state based solely on the monomial power.