2615 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 how local anisotropy significantly alters the fundamental oscillation frequency and dimensionless tidal deformability of neutron stars within a complete general relativistic framework, ultimately analyzing the correlation between these anisotropic effects and the GW170817 event.
This paper constrains the quantum gravity parameter of a rotating regular black hole with a Minkowski core by analyzing periastron and Lense-Thirring precession frequencies to fit five observed quasiperiodic oscillation events via Markov Chain Monte Carlo simulations, while also demonstrating that quantum effects suppress spin precession frequencies compared to the standard Kerr black hole.
This paper demonstrates that both low-SNR glitches and the residuals from glitch subtraction can significantly bias black hole spin measurements, necessitating joint inference of glitch and gravitational wave parameters to mitigate these uncertainties.
This paper demonstrates that the Hoyle-Narlikar gravity model with a creation field and nonminimal matter interaction successfully explains late-time cosmic acceleration, offers tighter constraints on the Hubble tension compared to other modified gravity theories, and remains observationally consistent with recent datasets while ultimately converging toward the stability of the standard CDM model.
The paper introduces FeynGrav 4.0, an updated package that enhances the study of gravity models by implementing a sophisticated BRST formalism for finite ghost-graviton interactions, a higher derivative gauge fixing term for quadratic gravity, and Feynman rules for Cheung-Remmen variables to achieve a polynomial action with a finite rule set.
This paper demonstrates that while Fermi degeneracy pressure stabilizes self-gravitating systems in Newtonian gravity, general relativity can render such systems unstable even at low temperatures, potentially driving the gravothermal collapse of dark matter into massive black holes in the early Universe.
This paper demonstrates that Hawking radiation, including its thermal spectrum and horizon dependence in a collapse metric, emerges from the double copy of particle production in a background gauge field that lacks a global horizon, thereby unifying classical and quantum double copy prescriptions for black hole spacetimes through worldline and amplitude methods.
This study systematically investigates the gravitational wave emission from a population of millisecond pulsars proposed to explain the Galactic Center GeV gamma-ray excess, concluding that while current detectors cannot observe them, next-generation instruments like the Einstein Telescope and Cosmic Explorer may detect these signals to definitively test the pulsar versus dark matter interpretations of the excess.
This study utilizes long-term numerical-relativity simulations with fully tabulated finite-temperature equations of state to demonstrate that thermal treatment significantly influences the late-time gravitational-wave frequency evolution and convective stability of neutron star merger remnants, thereby challenging established quasi-universal relations and confirming the excitation of inertial modes detectable by future third-generation observatories.
This paper investigates -dimensional charged black hole solutions and gravitational wave polarizations within a specific M-subset of Einstein-aether theory, revealing a unique aether charge constraint, exact thermodynamic laws, and distinct wave propagation characteristics where spin-2 and spin-1 modes travel at unit speed while the longitudinal mode exhibits linear time dependence rather than behaving as a spin-0 mode.