3256 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 a self-consistent single scalar field inflation model incorporating specific first-order string corrections, which successfully aligns with observational constraints from the Atacama Cosmology Telescope and Planck regarding the scalar spectral index and tensor-to-scalar ratio.
This paper proposes that nonminimal couplings to gravity can induce negative gravitational potential curvature, leading to the demagnification of light sources in microlensing events, which serves as a unique observational signature to probe dark matter structures and distinguish nonminimal gravity theories from standard models.
This paper reviews the construction of nonrotating reference frames in exact General Relativity that extend IAU systems to distant inertial objects, while cautioning against the recent misuse of Zero Angular Momentum Observers (ZAMOs).
This paper refutes recent claims by demonstrating that relativistic effects are insufficient to explain galactic rotation curves and gravitational lensing without invoking dark matter.
This paper demonstrates that primordial black holes retaining electric charges from the early universe, particularly near-extremal ones, can significantly alter Hawking radiation evaporation limits and thus reshape constraints on their viability as dark matter candidates.
This study demonstrates that thermal deformations caused by anisotropic heat conduction in super-Eddington magnetized neutron stars with column accretion can generate detectable continuous gravitational waves, potentially making these systems a new class of sources for upcoming observatories like the Einstein Telescope and Cosmic Explorer.
This paper presents a novel Bayesian method that utilizes the 3D cross-correlation of gravitational wave events with flux-limited galaxy catalogs to constrain the Hubble constant to approximately 9% precision using 300 simulated binary black hole mergers detectable by Advanced LIGO and Virgo at O4 sensitivity.
This paper investigates the influence of particle spin on creation, greybody factors, absorption, and evaporation processes of black holes within the framework of modified electrodynamics in gravity by analyzing scalar, vector, tensor, and spinorial perturbations to derive analytical and numerical results for emission rates and lifetimes.
This paper demonstrates that significant energy can be extracted from charged, rotating black holes via a collisional Penrose process involving the creation of oppositely charged particle pairs, provided the escaping particles carry sufficient charge, without requiring fine-tuning or extremality.
This paper constructs a unique spherically symmetric charged black hole solution in dimensions within a quasi-topological gravity framework featuring an infinite tower of higher-curvature corrections, demonstrating that an appropriate choice of coupling coefficients progressively mitigates and ultimately resolves the central singularity into a globally regular spacetime.