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.
InflationEasy is a C++ lattice code that extends the capabilities of LATTICEEASY to simulate nonlinear scalar field dynamics in an expanding universe, enabling fully nonperturbative studies of inflationary regimes, primordial black hole formation, and scalar-induced gravitational waves through features like a nonperturbative method.
This paper investigates the index of marginally outer trapped surfaces (MOTS) representing cosmological horizons in Kerr-Newman-de Sitter spacetime, establishing that the index is at least one (and exactly one under specific mass bounds) and deriving an area-charge inequality for MOTS with index one under the dominant energy condition.
This paper presents a method to analytically construct a localized, five-dimensional rotating braneworld black hole that connects to an AdS boundary and reproduces the standard four-dimensional Kerr spacetime on the brane, supported by a non-diagonal anisotropic fluid in the bulk without requiring matter on the brane itself.
This paper reassesses the accuracy of the Dudley-Finley approximation for Kerr-Newman quasinormal modes by comparing it to full coupled calculations, revealing typical agreement within 10% for real frequencies and 1% for imaginary parts, while also deriving analytic boundaries for distinct near-extremal damping regimes and analyzing the trajectories of high-overtone modes.
This paper studies the quasinormal modes of rotating quantum-corrected black holes using a hyperboloidal framework and pseudo-spectral method, then demonstrates that employing informative priors in a methodological parameter estimation pipeline significantly tightens constraints on the quantum correction parameter and reveals deviations from the standard Kerr model.
This paper investigates a relativistic self-gravitating equilibrium system with slow steady flow by developing a perturbative framework to derive differential equations for structural corrections and proposing a new condition that uniquely determines the unconventional form of the entropy current and its leading-order parameter.
This paper demonstrates that while naive extrapolations of microphysical absorption rates suggest ultralight bosons could rapidly drain neutron star rotational energy via superradiance, accounting for collective multiple-scattering effects in dense nuclear matter significantly suppresses these rates, thereby reconciling stellar cooling constraints with superradiance stability.
This paper demonstrates that the entanglement wedge cross-section (EWCS) serves as a superior and sensitive probe for diagnosing both effective metal-insulator and Hawking-Page transitions in Einstein-Born-Infeld massive gravity, revealing a universal critical exponent of 1/3 for geometry-related quantities near second-order phase transitions.
This paper demonstrates that the VCDM framework of minimally modified gravity, when combined with current cosmological data and an extended neutrino sector, robustly accommodates neutrino constraints while predicting a stable late-time dark energy transition that significantly alleviates the tension.
This paper demonstrates that the Wada property of escape basins in pp-wave spacetimes with polynomial profiles remains robust as the polynomial degree increases, while the associated basin and boundary entropies grow monotonically, confirming that the boundaries become increasingly fractal and unpredictable.