3826 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 investigates single-field slow-roll inflation within metric-affine gravity featuring Nieh-Yan-like terms, demonstrating that specific non-minimal couplings can render sub-Planckian field values viable and resolve observational tensions in both quartic and quadratic Palatini inflation models by adjusting the effective Nieh-Yan coupling.
This paper analytically demonstrates that the conformal dimensions of fields in the Ising model coupled to two-dimensional causal dynamical triangulations align with those on a fixed lattice, contrasting with Liouville gravity predictions by utilizing lattice methods and an adapted Duplantier-Sheffield framework.
Using the latest multi-probe observational data including DESI DR2, this study finds that interacting dark energy models are consistent with the standard CDM cosmology at high confidence levels, thereby ruling out the parameter space where such interactions could mimic modified gravity and reinforcing the growth index as a robust diagnostic for distinguishing between dark sector interactions and gravitational modifications.
The paper proposes a new resonant loop interferometer architecture that leverages coherent phase accumulation in closed optical loops to achieve unprecedented sensitivity to high-frequency gravitational waves, potentially surpassing the big-bang nucleosynthesis bound and enabling the exploration of the early Universe at energy scales beyond GeV.
This paper demonstrates that gravity under the equation-of-state condition reduces to an effective CDM model that successfully matches observational data from cosmic chronometers, baryon acoustic oscillations, and supernovae via both Bayesian MCMC and Artificial Neural Network analyses, though it does not resolve the existing and tensions.
This paper employs the gauge PDE approach and introduces a novel concept of -boundary to systematically construct a recursive boundary calculus that derives explicit equations, including higher-order conformal Yang-Mills and obstruction equations, for gauge fields on asymptotically AdS spaces by treating the boundary-defining function as a dynamical field.
This paper proposes a first-order gauge formulation of de Sitter general relativity where the pseudo-radius acts as a spacetime-dependent geometric compensator that locally breaks SO(4,1) symmetry, thereby modifying the Strong Equivalence Principle to link the vacuum to matter distribution and recasting the cosmological constant problem as a dynamical decay of a local order parameter rather than a static numerical puzzle.
This paper investigates how near-extremal black holes in dynamical Chern-Simons and scalar Gauss-Bonnet gravity amplify higher-derivative corrections to reveal distinct perturbative breakdown mechanisms, finding that while the former theory maintains a regular extremal limit with enhanced symmetry, the latter develops unavoidable horizon singularities and divergent tidal forces that invalidate the effective field theory expansion despite finite curvature invariants.
This paper establishes a framework for analyzing the leading-order adiabatic response of static black holes to slowly evolving asymptotic moduli by characterizing the resulting geometric and functional-analytic problems through explicit scalar criteria, demonstrating that the existence and uniqueness of the deformation reduce to a single scalar matching condition under transversality and Fredholm hypotheses.
This paper investigates the mass-charge relations and long-range forces between extremal black holes in Einstein-dilaton-Maxwell theory, identifying specific coupling conditions that lead to force cancellation and establishing a general pattern where the sign of the force depends on the product of dilaton couplings, a result supported by exact Toda black hole solutions and linked to the requirement of spacetime regularity.