3285 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 presents a new proof for the existence of solutions to the conformal method equations in general relativity using the Banach fixed point theorem, which offers the distinct advantages of guaranteeing solution uniqueness under a volume bound and providing an explicit construction, unlike the original Schauder-based approach.
This paper proposes a Kaniadakis-based holographic dark energy model that modifies apparent horizon dynamics through infrared corrections, revealing Van der Waals-like phase transitions and unstable thermodynamic branches while demonstrating observational viability through joint analysis of cosmic chronometers, supernovae, and baryon acoustic oscillation data.
This paper extends the quasi-local thermodynamics framework to Kerr-Newman black holes by introducing a geometric eccentricity parameter and its conjugate shear tension to account for horizon oblateness, thereby incorporating a shear work term into the first law and deriving generalized Smarr formulas for internal energy and enthalpy.
This paper investigates whether a weakly birefringent area-metric framework can screen the kinematic effects of Hawking-Ellis Type I warp drives, finding that while subluminal velocities are accommodated, the model disfavors fast warp drives due to a breakdown of cubic tilt scaling and sign changes in key variables at higher velocities.
This paper establishes that, analogous to the AdS/CFT correspondence, the thermal one-point function of a heavy boundary operator in the dual theory of a three-dimensional Schwarzschild-de Sitter black hole with a finite orbifold group encodes the complex geodesic length from the boundary to the singularity when using an appropriate bulk-boundary kernel.
This paper demonstrates that higher-derivative corrections explicitly break the hidden symmetry enhancements arising from U-duality in the dimensional reduction of non-maximal supergravities, including specific cases like minimal five-dimensional supergravity and bosonic/heterotic string theories.
This paper establishes a theoretical correspondence between unimodular diffusion cosmology and interacting dark energy models, demonstrating through observational data analysis that the diffusion framework is perturbatively equivalent only to vacuum-coupled models with homogeneous energy transfer and yields cosmological parameters consistent with the standard CDM model.
This paper presents an intrinsic construction of the Carrollian superplane as a principal -bundle by defining Carroll spinors via degenerate Clifford modules, thereby revealing a novel Carrollian supersymmetry that cannot be derived solely from the Inönü–Wigner contraction of the Poincaré superalgebra.
This paper proposes a modified gravitational theory where a non-metric Weyl-type boundary in the Einstein-Hilbert action generates effective, time-dependent dark energy that successfully reproduces CDM predictions and fits late-time observational data within a flat FLRW cosmology.
This paper investigates entanglement degradation near the horizons of various regular and singular black holes by computing entanglement negativity for an inertial observer and an accelerated observer, revealing that while high-frequency modes are better protected and Schwarzschild-de Sitter spacetime offers the strongest entanglement preservation, the Reissner-Nordström metric uniquely exhibits a local minimum in negativity and falls below the Schwarzschild case, suggesting entanglement can serve as a probe to distinguish between different spacetime geometries.