4428 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 establishes that while the axial Proca potential in Schwarzschild spacetime exhibits a geometric critical point at the innermost stable circular orbit where its stationary features merge, the resulting quasibound spectra remain regular and non-degenerate, displaying linear near-critical behavior rather than spectral degeneracy.
This paper investigates Einstein equations with a non-conserved energy-momentum tensor arising from particle diffusion, linking the resulting variations in the Newton constant and cosmological term to thermodynamic entropy and describing the evolution of a diffusing massive particle gas toward a massless relativistic state in an expanding universe.
This paper investigates the geometric and thermodynamic properties of a novel charged anti-de Sitter black hole embedded in a NGC 4649-type dark matter halo and a quintessence field, utilizing topological analysis and generalized free energy methods to demonstrate how dark matter enhances gravitational attraction while quintessence induces repulsive effects that significantly alter the system's phase structure and critical behavior.
This paper extends an exact lattice bosonization framework to the double-scaled matrix model, demonstrating that the theory is described by a boson on a finite, non-uniform lattice with spacing dependent on the position and string coupling, which yields finite results for local observables like entanglement entropy and fermion density that diverge in the traditional collective variable approach.
This paper employs general relativistic ray tracing to demonstrate how external fields, torus filling, viewing inclination, and black hole spin collectively shape the finite-distance images, brightness, and asymmetry of stationary, pressure-supported tori around electrically neutral Kerr--Bertotti--Robinson black holes.
This paper investigates the quasinormal modes and quasibound states of a massive scalar field in a logarithmically deformed Reissner-Nordström black hole spacetime, employing multiple analytical and numerical methods to demonstrate how nonlinear electrodynamics and scalar mass influence mode damping, binding energy, and state orthogonality.
This paper presents a framework that uses TianQin's observations of the millihertz stochastic gravitational-wave background to constrain binary black hole populations and forecast the detection rates of strongly lensed mergers for ground-based gravitational-wave detectors.
By establishing a correlation between supermassive black hole mass and galactic core radius in brightest cluster galaxies, this study derives a mass distribution function for the most massive black holes that, when combined with existing data for lower-mass systems, provides a sufficient population to explain the observed nanohertz gravitational wave background.
This paper investigates the quasinormal modes of dyonic Reissner-Nordström-like black holes within Einstein-bumblebee-Maxwell gravity using WKB and time-domain methods, demonstrating that the Laser Interferometer Space Antenna (LISA) can effectively detect these signals and constrain the black hole mass and Lorentz-violating parameters for supermassive black holes at low redshifts.
This paper employs catastrophe theory within a variational framework to establish a unified classification of axion-star stability, identifying critical mass thresholds and phase transitions between dilute and dense states that determine their potential collapse, bosenova emission, or black-hole formation.