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.
The paper demonstrates that while radiation from a uniformly accelerating charge escapes beyond the Rindler wedge, no electromagnetic flux crosses infinity within the wedge itself, a result that holds true in both Minkowski and Rindler frames despite the non-trivial coordinate transformation at infinity.
This paper reformulates the Tolman-Oppenheimer-Volkoff equations for static, spherically symmetric perfect-fluid stars within the semi-tetrad formalism as a covariant first-order dynamical system, enabling a geometric analysis of stellar structure through autonomous flows in phase space for both linear and general equations of state.
This paper presents a proof-of-concept Simulation-Based Inference pipeline that utilizes neural emulators trained on hydrodynamical simulations to extract cosmological parameters from 3D galaxy and neutral hydrogen maps, demonstrating that field-level multi-tracer analysis significantly outperforms traditional summary statistics by improving constraints by factors of 2 to 7 while robustly marginalizing over astrophysical uncertainties.
This paper establishes a universal, state-independent threshold for entanglement generation under general bilinear interactions in thermal environments, demonstrating that the interaction strength must exceed thermal noise to create entanglement regardless of initial states or mediator systems.
This paper demonstrates that while Horndeski gravity with shift symmetry and a linear potential can theoretically enable dark energy to cross the phantom divide via a nearly conserved scalar charge, such simplified models fail to accurately fit current observational data, prompting the authors to provide an interactive tool for further exploration.
This paper demonstrates that Schwarzschild space-time at future null infinity possesses an extended BMS symmetry algebra incorporating superdilations, which generate non-trivial, angle-dependent redshifts and carry physical charges rather than being pure-gauge transformations.
This paper investigates the thermodynamic properties and dynamical stability of a regular Dymnikova-Letelier black hole sourced by an effective anisotropic fluid, revealing that the string fluid parameter significantly influences phase transitions and induces systematic shifts in quasinormal modes while ensuring the black hole remains stable under scalar perturbations.
This paper investigates black hole area quantization by applying Landauer's principle to discrete entropy changes, demonstrating how the resulting area spectrum parameters and their asymptotic behaviors vary across generalized entropy models like Barrow, modified Rényi, and Kaniadakis entropies compared to the standard Bekenstein–Mukhanov limit.
This paper investigates the circular motion of charged test particles on the equatorial plane of a weakly magnetized Taub--NUT black hole with a Manko--Ruiz parameter, deriving closed-form conditions for constrained orbits and analyzing how the magnetic field and particle charge influence the innermost stable circular orbit (ISCO) radius.
This paper establishes a generalized Minkowski theorem for constant-curvature Lorentzian spaces by proving that four non-trivial holonomies uniquely reconstruct a strictly convex tetrahedron in de Sitter or anti-de Sitter space under specific closure and convexity conditions, while also characterizing the resulting polar-dual projective tetrahedra and recovering classical Euclidean and hyperbolic reconstruction results in the spacelike sector.