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 utilizes backward ray-tracing simulations within a thin-disk accretion model to demonstrate that the Lorentz violation parameter in low-energy Hořava gravity significantly influences black hole shadow morphology, brightness asymmetry, and polarization patterns, suggesting that future high-resolution EHT observations could effectively constrain these violations.
This paper investigates periodic orbits and their associated gravitational wave emissions in an effective field theory extension of general relativity, revealing that higher-order curvature terms modify black hole spacetime dynamics and produce distinct waveform substructures linked to zoom-whirl orbital behavior.
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 introduces and analyzes Bell-network states, a class of diffeomorphism-invariant, entangled states in loop quantum gravity that satisfy an area-law for entanglement entropy and describe homogeneous, isotropic quantum geometries on a dipole graph, offering potential boundary states for the theory's dynamics.
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 investigates gravitational wave emissions from periodic orbits and quasi-periodic oscillations around Einstein nonlinear Maxwell Yukawa black holes using a Hamiltonian approach to analyze orbital stability and constrain the black hole's parameters via MCMC simulations within the relativistic precession model.
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.
This paper demonstrates that while rocket-driven Penrose energy extraction in Kerr spacetime is theoretically possible, it is empirically rare (occurring in at most ~1% of broad parameter scans) and requires extreme conditions such as high black-hole spin, highly relativistic exhaust, and finely tuned initial trajectories, with single periapsis impulses proving more propellant-efficient than continuous thrust.