3151 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 identifies and characterizes a critical, flat longitudinal geometry supported by Maxwell flux that serves as an algebraic midpoint interpolating between Nariai and Bertotti-Robinson spacetimes, acting as a universal solution for a broad class of higher-curvature gravity theories due to its degenerate Kundt/CSI structure.
This paper presents a canonical analysis of the Holst model for General Relativity with the Barbero parameter set to and unconstrained lapse and shift functions, deriving a complete system of 37 equations that confirms consistency with standard Einstein dynamics while revealing new differential constraints dependent on gauge choices, thereby establishing a viable foundation for extending Loop Quantum Gravity to dimensions beyond .
This paper derives generalized Gauss-Codazzi relations and boundary terms for non-metric geometry to construct the Hamiltonian of symmetric teleparallel gravity, thereby proving it possesses the same number of degrees of freedom as General Relativity.
This paper proposes that the intrinsic probabilistic and contextual nature of quantum theory, including its fixed Born rule, arises from a non-commutative quantum spacetime companion, leading to a background-independent "gravitized" quantum theory that predicts intrinsic higher-order interference and offers new insights into string theory, vacuum energy, and particle masses.
This paper proposes that the vortex line ensemble in Vinen quantum turbulence within superfluids is characterized by non-extensive Tsallis-Cirto statistics with a parameter of .
This paper demonstrates that cosmological models derived from generalized horizon entropies are viable within Big Bang Nucleosynthesis constraints, as their required parameters for late-time cosmic acceleration fall well within the bounds set by freeze-out conditions and light element abundances, despite the persistent lithium discrepancy.
This paper investigates universal relations between gravitational wave signals and physical properties of supernovae by systematically analyzing protoneutron star oscillation frequencies through linear asteroseismology and comparing them with simulation data to overcome the challenges of model-dependent signal extraction.
This paper numerically investigates the quasinormal modes of charged covariant effective black holes with a cosmological constant under scalar perturbations, revealing that the quantum parameter significantly alters the frequency spectrum by introducing new spectral features and complex mode interactions, thereby highlighting the necessity of analyzing the full spectrum beyond fundamental modes to understand overtone outbursts and near-extremal behaviors.
This paper refutes the claim that classical gravity can generate entanglement, demonstrating that the previously reported effect was an artifact of incorrectly discarding specific transition amplitudes which, when properly included, ensure that an initially unentangled state remains factorized.
This paper derives a universal, self-similar analytic expression for the probability distribution of the gravitational-wave background characteristic strain squared from inspiralling supermassive black-hole binaries, showing that it converges to a reflected map-Airy distribution in the limit of a large but finite number of sources, a result applicable to any SMBHB population and useful for pulsar timing array data analysis.