3919 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 presents a single nonlocal gravity model derived from quantum corrections that successfully interpolates between reproducing cosmological phenomena typically attributed to dark matter and realizing Modified Newtonian Dynamics (MOND) in gravitationally bound systems.
This paper investigates the effective dynamics of the Janis-Newman-Winicour spacetime within loop quantum gravity, demonstrating that while the constant-parameter () scheme resolves classical singularities through quantum bounces, an alternative scheme based on Dirac observables fails to provide a globally valid effective theory due to the emergence of new singularities.
This paper demonstrates that for a charged spinning test particle moving in the electromagnetic field of a charged spinning ring-disk singularity (the limit), two hidden constants of motion analogous to the Carter and Rüdiger constants exist if and only if the particle's multipole moments are constrained by specific Wilson coefficients corresponding to the spin-exponentiation of effective Compton amplitudes up to second order in spin.
This paper establishes the positive mass theorem for complete asymptotically hyperbolic manifolds satisfying the dominant energy condition by proving a quantitative shielding theorem for their energy-momentum vectors, building upon spectral PSC concepts and extending results to manifolds with asymptotically locally hyperbolic ends under certain symmetries.
This paper presents a geodesically complete, nonsingular closed FRW cosmology within ordinary general relativity that transitions from a curvature-supported bounce to slow-roll inflation via a single canonical scalar field, satisfying the Null Energy Condition throughout while yielding inflationary observables consistent with current constraints.
This paper analytically derives the resonance energies for Schwarzschild-de Sitter black holes, revealing that unlike the infinite, delocalizing spectrum of asymptotically flat Schwarzschild black holes, the presence of a cosmological constant restricts bound-state resonances to a finite number of levels, thereby preventing infinite delocalization.
This paper numerically compares post-Newtonian formulations and scalar perturbation schemes for simulating binary star interactions with supermassive black holes, revealing that while methods agree for million-solar-mass black holes, significant discrepancies in binary separation and eccentricity arise near billion-solar-mass black holes, particularly with the pair-wise post-Newtonian approach.
This paper proves that the Lorentz-FitzGerald contraction is the unique deformation required for a moving resonant cavity to preserve its spherical-harmonic eigenstructure, thereby deriving both length contraction and time dilation as necessary consequences of phase closure in a mechanical wave medium without additional assumptions.
This paper proposes a cosmological uncertainty relation based on a deformed commutation for the scale factor that introduces a geometric correction to the Friedmann equation, offering a unified framework where a single parameter can explain both late-time cosmic acceleration and a non-singular Big Bang bounce without requiring new particles or fields.
This paper argues that cosmological tensions ( and ) should be treated as global consistency conditions forming a "consistency triangle" with the growth index, demonstrating that this multi-probe constraint severely restricts the viable parameter space of gravity models and their extensions.