3256 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 the quantum gravitational interaction arising from gravitodiamagnetic coupling between two massive objects, demonstrating that this quadratic interaction induces an attractive potential scaling as and characterized by an induced quadrupole moment opposite to the applied gravitomagnetic field.
This study demonstrates that in Bianchi type-I quantum cosmology, the choice of wave packet structure critically determines both singularity resolution and quantum relaxation dynamics, where Lorentzian wavepackets generate stronger quantum potentials and more complex velocity fields that facilitate non-singular bounces and more effective relaxation toward Born-rule equilibrium compared to Gaussian superpositions.
This paper introduces a point-particle-limit effective-source method that transforms the gravitational self-force problem into well-defined jump conditions solvable via a discontinuous Galerkin scheme, demonstrating superior computational efficiency and accuracy over traditional approaches for computing metric perturbations and self-forces in the Lorenz gauge.
By extending a quantum gravity model to the interior region of a Schwarzschild-AdS black hole to determine spatial eigendistribution multiplicities, the authors establish a unitary equivalence between the interior and exterior Hilbert spaces, thereby resolving the information paradox on a quantum level.
This paper develops a systematic method using Continuous Sensitivity Analysis to simplify the calculation of cosmological observables within a gradient-corrected formalism, demonstrating its effectiveness by deriving analytical expressions for the power spectrum and non-Gaussianity in the Starobinsky model.
This paper demonstrates that first-order scalar and tensor perturbations in Jordan-frame scalar-tensor gravity admit an exact Eckart-type thermodynamic description, where the linearized field equations are governed by effective density, heat flux, pressure, and anisotropic stress channels, thereby identifying gravitational wave damping with the scalar sector's effective transverse-traceless anisotropic stress.
This paper establishes a rigorous connection between the time-energy uncertainty principle and virtual particles in quantum field theory by demonstrating that subcycle mode vacuum fluctuations can be converted into real excitations with unit efficiency, thereby providing an operational definition for the heuristic concept of virtual particles.
This study employs backward ray-tracing to reveal that Vaidya black holes exhibit unique dynamic lensing features, including a distinct lensing ring, a transient bright ring, and a contracting, brightening ring caused by dynamical redshift, all of which provide novel observational signatures for identifying accreting black holes and probing temporal spacetime evolution.
Using two model-independent methods and recent observational data from Type Ia supernovae, baryon acoustic oscillations, cosmic chronometers, and gamma-ray bursts, this study confirms the validity of the cosmic distance duality relation within a 1σ confidence level, finding no evidence for its violation.
This paper proposes a -deformed Wheeler--DeWitt framework for Schwarzschild black and white holes that yields a finite-dimensional Hilbert space and bounded entropy, thereby resolving evaporation divergences through a stable cold remnant and establishing a consistent semiclassical link between quantum gravity and cosmology.