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 establishes precise global asymptotic expansions for solutions to semilinear wave equations with power-type nonlinearities on asymptotically flat spacetimes, extending Price's law to nonlinear settings by combining geometric microlocal analysis with classical physical-space techniques.
By performing a joint analysis of DESI DR2, CMB, DESY5 supernova, and DESY1 weak lensing data within a dynamical dark energy framework, this study reports a high-confidence detection of a positive total neutrino mass of , driven by DESI's preference for evolving dark energy and the inclusion of free effective neutrino species and weak lensing constraints.
This paper proposes a relativistic scalar field model within integrable Weyl geometry that, through specific Lagrangian terms activated only under spacelike gradients below a MOND threshold, successfully unifies dark matter and MOND by inducing MOND-like dynamics in the weak-field limit while simultaneously accounting for gravitational light deflection.
Motivated by weak null singularities in black hole interiors, this paper investigates the uniqueness of continuous spacetime extensions in 1+1 dimensions, demonstrating that while the -structure is generally not uniquely determined, it exhibits rigidity under strong spherical symmetry, and further constructing examples where continuous extensions share the same -structure but possess distinct -structures.
This study presents the first Bayesian inference analysis of neutron star properties in symmetric teleparallel gravity using NICER observations, revealing that the exponential model is statistically preferred and predicts a maximum neutron star mass reaching the lower mass gap (--) while remaining consistent with current observational constraints.
This paper proposes a selection criterion to determine when computationally cheaper gravitational wave models can replace more expensive precessing, higher-order multipole models in population analyses without introducing bias, potentially reducing overall inference costs by up to 78% for astrophysically motivated populations.
This paper numerically constructs and analyzes a family of critical spacetime crystals in arbitrary continuous dimensions , determining their echoing periods and Choptuik exponents as continuous functions of and supporting these findings with analytical expansions that suggest both quantities vanish as approaches 3.
This paper establishes a comprehensive set of matrix-based degeneracy conditions and consistency constraints for multi-field higher-order scalar-tensor theories that successfully eliminate unwanted Ostrogradsky modes, ensuring the propagation of only the two tensor and scalar degrees of freedom.
This paper investigates how the Extended Generalized Uncertainty Principle (EGUP) influences the thermodynamic properties, stability, and remnant characteristics of a Kerr-Newman black hole surrounded by quintessence, while comparing these effects with those derived from the Generalized Uncertainty Principle (GUP) and the Extended Uncertainty Principle (EUP) to illustrate variations across different cosmic eras.
This paper extends the criteria for exciting one Gaussian state from another in generalized free field theories to include states with nonzero vacuum expectation values, proving that excitability requires both specific conditions on connected two-point functions and a bounded difference in VEVs, and demonstrating that in anti-de Sitter spacetime, a VEV shift is excitable if and only if its boundary extrapolation is excitable in the dual conformal field theory.