3875 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 employs the generalized off-shell Helmholtz free energy method within a topological framework to analyze the thermodynamic properties and phase transitions of the generalized Bardeen black hole, revealing that its regular configurations possess two topological defects with opposite winding numbers that cancel out, unlike the single unstable branch found in the Schwarzschild case.
This paper investigates how photon-axion conversion in the strong gravitational fields of rotating Kerr black holes, particularly around M87*, causes observable dimming of photon spectral luminosity in X-ray and gamma-ray bands, offering a potential method for future high-resolution telescopes to constrain axion properties.
This paper investigates slow-roll inflation within a broad class of scalar-tensor Gauss-Bonnet models by deriving theoretical predictions for spectral observables and their higher-order runnings, establishing consistency equations, and constraining model parameters against the latest Planck observational data.
This paper constructs a class of regular black hole geometries with finite curvature invariants using various analytic profiles and demonstrates that their dynamical stability under axial gravitational perturbations is critically determined by the shape of the effective potential, particularly the peak-to-valley ratio.
This paper proposes a scale-invariant gravity model with a matter-dependent potential that unifies inflation, early dark energy, and late dark energy, offering a mechanism to alleviate the Hubble tension by modifying the sound horizon while remaining consistent with CMB, BAO, and local observations.
This paper demonstrates that finite population and windowing effects inherent to real astrophysical sources introduce unmodeled non-Gaussianities into pulsar timing array signals, challenging the standard assumption of a purely Gaussian gravitational wave background.
This paper demonstrates that the Taiji space-based gravitational-wave detector can effectively probe the complex singlet extension of the Standard Model by performing Bayesian and Fisher-matrix analyses to constrain Higgs self-couplings through the detection of electroweak phase transition signals, thereby highlighting the complementarity between gravitational-wave observations and collider physics.
This paper develops a quantum field theoretic framework for a Bose-Einstein condensate simulator that maps to a dispersive cosmological spacetime, demonstrating how time-dependent interactions can analogously produce scale-invariant power spectra while revealing specific Trans-Planckian damping effects that modify the spectrum in the ultraviolet regime.
This paper employs state-of-the-art LISA simulations and Bayesian analysis to evaluate the observatory's capability to detect and characterize the gravitational-wave displacement memory effect from individual massive black hole binary mergers, thereby establishing detection criteria, reconstruction precision, and expected event rates for testing General Relativity.
This paper demonstrates that Scalar-Tensor-Vector Gravity (STVG-MOG) can reproduce the Cosmic Microwave Background acoustic power spectra of the standard CDM model without particle dark matter by utilizing nonrelativistic excitations of a massive vector field that dynamically mimic a pressureless dust component in the early universe.