2532 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 derives general multimessenger consistency conditions within the Friedmann cosmological model that allow for probing the Universe's curvature and testing the cosmological constant using gravitational and electromagnetic wave luminosity distances, independent of the dark energy equation of state and specific density parameters.
This paper investigates the divergent perturbative series of correlation functions for a massless, self-interacting scalar field in de Sitter space by applying autonomous equations to both the original series and their Borel-Le Roy transforms, demonstrating that the latter approach yields results that substantially better match the stochastic picture while also offering new derivations and methods for extracting perturbative coefficients.
This paper reviews dusty plasma physics and cosmic wave interactions while deriving a modified Jeans instability criterion for an expanding, radiation-pressure-dominated universe using the Einstein-de Sitter model to explain the formation of cosmological structures.
Using an updated JWST-based gravitational lens model, the paper confirms that the Bullet Cluster exhibits a residual missing mass discrepancy under Modified Newtonian Dynamics (MOND) that is centered on its collisionless galaxies, similar to other clusters of comparable mass.
This paper establishes a predictive framework for controlled penumbral inflation by demonstrating that local branch data in long monodromic valleys determine the existence of inflationary plateaus, thereby identifying a specific analytic family with an exactly solvable two-field attractor that remains predictive under higher-order corrections.
This paper introduces the Bayes factor-Bayes factor (BB) plot, a diagnostic tool that leverages the relationship between Bayes factors and their distributions under competing hypotheses to validate calculation accuracy and efficiently estimate background distributions, as demonstrated through applications in gravitational wave astronomy including the statistical significance assessment of GW231123.
This paper demonstrates that requiring UV completeness in a specific class of scalar-tensor gravity models restricts their infrared parameters to a narrow region, thereby ruling out a portion of the parameter space currently accessible to fifth-force experiments and offering a direct path to falsify these theories.
This paper introduces a frequentist -value method to test the adequacy of gravitational-wave formation models, demonstrating that while some proposed explanations for exceptional events like GW190521 are sufficient, others fail to adequately account for the observed data.
This paper introduces a Gaussian process framework with a time-localized kernel to test general relativity using gravitational wave data from binary black hole mergers, finding no evidence of deviations in GWTC-3 events and constraining fractional strain deviations to as low as 7%.
This paper constructs and analyzes electrically charged, rotating traversable wormhole solutions supported by Casimir energy and thermal stress, demonstrating that specific configurations—such as those with constant ZAMO angular velocity or radially decaying rotation—can satisfy Einstein's field equations while preserving static-like properties or mitigating unrealistic long-range frame dragging.