2536 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 primordial black holes generate a lepton asymmetry of approximately through non-Hermitian vector terms in the Dirac Lagrangian for neutrinos in curved spacetime, which subsequently converts into the observed baryon asymmetry via the sphaleron process.
This paper presents a simple, partly heuristic and geometric derivation of the Bekenstein-Hawking entropy equation for black holes, while briefly exploring its physical implications and connection to Stephen Hawking's work.
This paper investigates a generalized Dymnikova black hole surrounded by perfect fluid dark matter and a cloud of strings, analyzing how these matter sources modify its thermodynamic stability, photon and particle dynamics, and quasi-periodic oscillation signatures.
This paper investigates the spacelike Kasner singularity of spherically symmetric, static, asymptotically flat black holes in Einstein-scalar gravity, demonstrating how asymptotic parameters like mass and scalar charge determine the singularity's properties and establishing that the Schwarzschild black hole maximizes the survival time of massive particles before reaching the singularity.
Using a Thermo Field Dynamics approach to model a collapsing dust shell in -dimensional AdS gravity, this paper derives the Bekenstein-Hawking entropy by computing the entanglement entropy of a massive scalar field, revealing a localized energy density near the horizon that confirms the brick wall picture.
This paper demonstrates that while a classical Newtonian potential can induce recoherence in systems lacking internal structure, the interplay between gravitons and a composite particle's internal degrees of freedom ultimately ensures inevitable long-time gravitational decoherence even for microscopic masses.
This paper generalizes the WKB tunneling approach to derive the Unruh temperature for observers with arbitrary time-dependent acceleration by introducing a generalized Rindler metric and integrated acceleration coordinate, while also providing approximations for small deviations from constant acceleration and explicit transformations to conformal coordinates.
This paper establishes a unified semiclassical framework for the Reissner--Nordström black hole using Misner--Sharp--Hernandez mass quantization, which yields discrete mass spectra and Planck-scale corrections to thermodynamics that are encoded into a quantum-deformed geometry exhibiting modified surface gravities, stabilized inner horizons, and subtle shifts in observational signatures.
This paper extends the WKB analysis of Lorentzian vacuum transition probabilities to gravity for homogeneous and isotropic universes, deriving both exact and approximate solutions that confirm the preservation of non-singular initial states predicted by Einstein gravity while demonstrating model-dependent variations in transition probabilities.
This paper proposes that the shadows of hypothetical stupendously large black holes (SLABs) against the cosmic microwave background serve as a powerful observational constraint, effectively ruling out SLABs with masses exceeding within the last scattering surface and limiting their contribution to the cosmic energy density.