2593 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 resolves the apparent violation of the first law in nonsingular black hole thermodynamics by using 2D dilaton gravity to derive a consistent energy formula via the Iyer-Wald formalism, demonstrating that previous discrepancies stemmed from incorrect energy choices.
This paper analyzes the causal structure and geodesic dynamics of horizonless JMN-1 and JNW spacetimes to demonstrate how their distinct singularity types and effective repulsive behaviors produce unique strong-field lensing and shadow signatures that could be observationally distinguished from black holes by instruments like the Event Horizon Telescope.
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 investigates -gravity with matter-gravity coupling and a noncoincident connection as a geometric dark energy candidate, finding that the power-law model with is consistent with observational data and statistically equivalent to the CDM model.
This paper investigates a cosmological scenario where mini primordial black holes, formed during a stiff fluid domination phase in runaway inflation models, evaporate to reheat the early universe, while also predicting a compound gravitational wave signal, potential dark energy contributions, and the existence of PBH remnants.
This paper demonstrates the cosmological viability of anisotropic inflation in Thurston spacetimes by showing that the intrinsic eccentricity of these geometries induces a vector field that triggers a stable, anisotropic inflationary phase, thereby establishing a unique, stable fixed point similar to those found in Bianchi models.
This paper constructs exact dyonic Reissner-Nordström-like and Taub-NUT-like black hole solutions in four and higher dimensions within Einstein-bumblebee gravity, analyzes their thermodynamic properties using the Wald formalism to establish the first law, and explores their generalizations to various topological horizons.
This paper presents a family of analytic solutions for the nearly-equatorial motion of a spinning test particle in Kerr spacetime, deriving closed-form expressions for both eccentric and homoclinic orbits that match numerical simulations and introduce a novel "fixed eccentricity spin gauge" to resolve singularities at the separatrix for modeling extreme mass-ratio inspirals.
This paper demonstrates that modified loop quantum cosmology (mLQC-I) naturally drives the Bianchi I universe toward isotropy by dynamically suppressing cosmological shear through a robust quantum-gravitational mechanism after the bounce, independent of the matter equation of state.