2489 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 analyzes the geodesic structure, circular orbit stability, and light deflection of Regular Phantom Black Holes across flat, de Sitter, and Anti-de Sitter spacetimes, specifically investigating how the scale parameter influences particle trajectories and mimics repulsive or attractive forces.
This paper resolves the issue of non-factorising multi-particle states in infrared-finite gauge and gravitational theories by introducing new zero modes and utilizing asymptotic symmetry Goldstone modes, thereby restoring the standard Fock-space factorisation for dressed particles.
This paper demonstrates that the two-parameter Sharma-Mittal entropy framework unifies black hole thermodynamics and information theory to derive modified gravitational laws that naturally reproduce a MOND-like regime, offering a potential alternative explanation for dark matter phenomena.
This paper explicitly constructs a nonradial, O(4)-breaking false vacuum decay solution for a scalar field theory with a specific sextic potential, revealing a configuration of two orthogonal bubble-tubes that supports real-time evolution and possesses an odd number of unstable modes.
This paper investigates the quasinormal modes, graybody factors, and Hawking radiation of a newly discovered family of asymptotically flat black holes with primary scalar hair in beyond-Horndeski gravity, demonstrating that the scalar hair leaves distinctive imprints on ringdown properties and emission rates while confirming that the associated naked singularities are quantum mechanically singular.
This paper demonstrates that Cosmological Frequency Combs naturally emerge as time-periodic attractors within a quintessence cosmology with an exponential potential, where numerical simulations reveal that coherent comb structures arise only within specific dynamical windows controlled by the fundamental frequency, background equation of state, and initial conditions.
This study systematically benchmarks exact MCMC, Gaussian Process-emulated MCMC, and neural Simulation-Based Inference on late-time cosmological datasets, demonstrating that while SBI offers order-of-magnitude computational savings with minor parameter shifts compared to exact methods, all three approaches yield consistent cosmological constraints and expansion histories.
This paper derives a novel stress-energy tensor for interacting fluids based on their relative motion and demonstrates that this interaction remains compatible with cosmological models by preserving the qualitative evolution of anisotropy in Bianchi type-I spacetimes.
This paper utilizes the Schwinger-Keldysh formalism and adiabatic regularization to analyze the ultraviolet structure of real-time gravitational wave linear response in a resonant scalar field, identifying specific time-dependent divergences that require new local counterterms and revealing a renormalization mismatch with the tadpole stress tensor that is attributed to the off-shell nature of the background.
This paper revisits generalized unimodular gravity to demonstrate that standard matter components can be derived purely from geometry, offering a new perspective on the dark sector while recovering general relativity's cosmological background and perturbation results through a different interpretation.