3875 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 optical, thermodynamic, and perturbative properties of a Schwarzschild black hole immersed in a Hernquist dark matter halo, demonstrating that the dark matter distribution significantly modifies photon trajectories, thermal stability, and scalar field dynamics compared to the standard vacuum solution.
This paper investigates the semiclassical evolution of Hawking atmospheres around evaporating anti-de Sitter black holes by combining the Parikh-Wilczek tunneling method with renormalized energy-momentum tensor calculations to reveal significant deviations from ideal blackbody behavior driven by strong backreaction effects.
This paper proposes a novel method to probe the validity limits of the semiclassical Einstein equation by constructing a controlled, analytically tractable scenario where a mixture of weak-gravity quantum states drives the system into a strong-gravity regime, allowing for a direct comparison between quantum and semiclassical predictions via a branch-degenerate observable.
This paper proposes a quantum-induced modification to the stress-energy tensor within a torsion-free, quantum-deformed metric framework on a Riemann manifold, which reconciles General Relativity with Quantum Mechanics by introducing minimal length uncertainty and non-conserved energy-momentum exchange, while recovering classical formulations in the limit of vanishing quantum effects.
This paper investigates a generalized WKB ansatz for the quantum propagator by introducing an additive exponent as a measure of quantumness, analyzing its role through the Hamilton-Jacobi equation, and exploring its application to various systems, field theories, and Hamiltonian-constrained dynamics.
This paper demonstrates that tetrapartite entanglement in a four-qubit Dicke state exhibits a non-monotonic evolution under the Unruh effect, initially decreasing but subsequently increasing toward a finite value as acceleration grows, thereby challenging the conventional view of monotonic degradation and highlighting the potential of Dicke states as robust resources for relativistic quantum information processing.
This paper demonstrates that black hole ringdown acts as a spectral filtering process where quasinormal mode excitation amplitudes are quantitatively determined by the Fourier content of the initial perturbation at the modes' characteristic frequencies, a mechanism validated through analytical derivations, numerical simulations, and a new fitting tool called .
This paper proposes that spacetime discreteness emerges naturally from the consistency of microscopic measurements, where treating infinitesimal intervals as scale-dependent outcomes leads to discrete, equidistant lengths and a geometric renormalization-group flow that preserves Lorentz invariance and general covariance without ad hoc cutoffs.
This paper introduces the criterion of physical coherence to evaluate and challenge quantum gravity programs that attempt to derive time from a timeless fundamental level, specifically testing semiclassical and thermal time approaches against metaphysical incoherence arguments while setting a standard for their conceptual success.
This paper investigates the absorption and scattering cross sections of massive scalar waves in charged Ayón-Beato-García and Bardeen regular black hole spacetimes, demonstrating that increasing the field's mass reduces total absorption and widens interference patterns while revealing conditions under which these regular black holes exhibit spectral similarities to standard Reissner-Nordström black holes.