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 introduces a simple, algebraically computable covariant invariant derived directly from initial data that vanishes if and only if the data corresponds to the Kerr spacetime, thereby providing a measure of "non-Kerrness" without requiring the solution of partial differential equations.
This paper demonstrates that interactions between multiple scalar fields, even with weak coupling, typically suppress black hole superradiance, thereby necessitating a revision of dark matter constraints derived from single-field analyses and highlighting the enhanced potential of multi-field superradiance as a probe for the dark sector.
This paper demonstrates that magnetic Reissner-Nordström black holes exhibit genuine, non-dissipative tidal Love numbers when subjected to electrically-charged scalar-field tides, providing a clear, regularization-independent counterexample to the conventional belief that black holes possess vanishing Love numbers.
This paper demonstrates that utilizing black hole analogues modeled by position-dependent XY spin chains as quantum batteries, where intentionally engineered differences in scrambling parameters via controlled quenches significantly enhance both maximum stored energy and peak charging power, thereby accelerating the charging process through spacetime-mimicking scrambling dynamics.
This paper introduces a lattice simulation framework to compute scalar-induced gravitational waves from isocurvature and mixed perturbations, demonstrating strong agreement with semi-analytical predictions and revealing how spectral features in early matter-dominated eras depend on microphysical properties like primordial black hole characteristics.
This paper presents a high-resolution 3+1 general relativistic hydrodynamics simulation of an equal-mass neutron star-black hole merger involving a light black hole, conducted entirely with public codes (Einstein Toolkit and FUKA) to provide accurate data for improving gravitational-wave models and parameter estimation.
This paper investigates New Massive Gravity augmented with Chern-Simons, cubic, and quartic terms under CSS boundary conditions, demonstrating that BTZ black hole entropy can be derived from a Warped-CFT degeneracy and that linearized energy excitations remain non-negative at two specific chiral points.
This study investigates how ideal fermionic dark matter with masses between 0.2 and 1 GeV affects neutron star structures and tidal properties, revealing that current astrophysical constraints from NICER, 2-solar-mass observations, and LIGO/Virgo data severely limit the permissible dark matter mass fractions and exclude specific parameter ranges to ensure consistency with observed neutron star characteristics.
This paper utilizes the sound shell model to derive and compare gravitational wave spectra from direct and inverse cosmological phase transitions, offering new insights into distinguishing between these distinct fluid dynamics in early Universe observations.
This study numerically investigates the structural properties of magnetized neutron stars within the f(R,T) gravity framework, revealing that negative modified gravity parameters increase maximum mass while strong magnetic fields cause only slight reductions, with results consistent with observational data from GW170817, PSR, and NICER.