3841 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 presents fully relativistic calculations of finite-size effects, including quadratic-in-spin and quadrupole terms, for quasicircular inspirals of small companions into Kerr black holes within a self-force framework, providing both numerical data and analytical expansions to improve gravitational waveform models for asymmetric binaries.
This paper demonstrates that the vacuum decay rate in the teleparallel (TEGR) and symmetric teleparallel (STEGR) formulations of gravity yields the same tunneling exponent as General Relativity, confirming that their classical equivalence extends to the quantum level.
This paper proposes a likelihood-free neural posterior estimation method using conditional normalizing flows to efficiently and scalably perform parameter estimation for overlapping Galactic Binary signals in the LISA mission, overcoming the computational limitations of conventional Markov Chain Monte Carlo sampling.
This paper reformulates the Nakamura Conjecture, which describes the integrable structure of the Tomimatsu–Sato family of Einstein's equations, into a unified reduced trilinear framework based on -symmetric Hirota operators, thereby replacing mixed derivative terms with a coherent trilinear algebra that supports a direct method for solving the hierarchy.
This paper presents the first numerical calculation of the scalar vacuum polarization exterior to a Loop Quantum Gravity-corrected black hole, revealing that while quantum gravitational effects enhance near-horizon polarization and induce a small negative tail due to background curvature, these corrections scale linearly with the quantum parameter and remain numerically indistinguishable from the classical Schwarzschild solution for astrophysically realistic values.
Using general-relativistic simulations of spherically symmetric collapse with a lattice gas equation of state, this study demonstrates that pressure stiffening near saturation density increases the primordial black hole formation threshold by approximately 0.50% while leaving the critical mass-scaling exponent unchanged, thereby proving that saturation effects can stabilize gravitational collapse without altering universal scaling laws.
This paper derives general-relativistic self-similar shock-wave solutions for the collapse of a singular isothermal sphere into a black hole, revealing that such shocks propagate at relativistic speeds, suppress central accretion rates by a factor of 5–7 compared to smooth collapse, and release energy equivalent to ~10% of the enclosed rest mass, offering a new analytical framework for understanding early supermassive black hole formation and related high-redshift phenomena.
This paper proposes and validates a method that eliminates uncertainties in Milky Way dispersion measure contributions by analyzing dispersion measure differences between localized fast radio bursts in the same sky region, thereby enabling more robust constraints on cosmological parameters.
This paper establishes that in non-inertial quantum systems, the Krylov complexity corresponds exactly to the mean number of correlated Rindler pairs generated via Bogoliubov mixing, revealing three distinct dynamical regimes including a detuning-dominated localization where complexity remains confined to low Krylov levels.
This study utilizes ray-tracing simulations to characterize the optical appearances of Ellis-Bronnikov wormholes under optically thick and thin accretion from both sides of the throat, revealing how specific parameter values and observer positions influence apparent size, brightness, and image structure to determine which configurations can mimic Event Horizon Telescope observations.