3784 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 a reflective surface near a Kerr black hole impostor would alter the light curve of an orbiting hot spot, predicting distinct late-time electromagnetic echoes that could serve as observational signatures for horizon-scale modifications.
This paper calculates that while a dark matter halo has a negligible effect on the ringdown waveforms and shadows of supermassive black holes like M87*, a surrounding dark matter spike produces a significantly larger, potentially detectable impact that existing Event Horizon Telescope observations are nearly sensitive enough to confirm or rule out.
This paper demonstrates that pp-wave and AdS wave metrics serve as exact solutions to the field equations of Cotton and Conformal Killing Gravity, revealing key distinctions from General Relativity through the reduction of these equations to inhomogeneous Laplace, Helmholtz, and Klein-Gordon forms depending on wave surface curvature.
This paper investigates cosmological singularities within Covariant Extrinsic Gravity (CEG) by demonstrating that the theory supports a stable, nonsingular Einstein static initial state and by classifying the precise conditions under which the universe either evolves toward or avoids future finite-time singularities.
This paper investigates how outgoing electromagnetic radiation prepared near a Schwarzschild black hole horizon undergoes gravitational redshift into a soft regime, leading to an infrared-safe scattering probability that links the zero-frequency component of the transmitted radiation to electromagnetic memory at future null infinity, thereby offering a new asymptotic constraint and fingerprint for the radiation source.
This paper details the public release of open data from the LIGO, Virgo, and KAGRA network via the Gravitational Wave Open Science Center, encompassing calibrated strain time series and analysis products from the first part of the fourth observing run (O4a) and selected engineering periods collected between May 2023 and January 2024.
This paper utilizes a fully relativistic pipeline to quantify how the Laser Interferometer Space Antenna's performance and mission duration impact the detection horizons and parameter estimation precision of Extreme and Intermediate Mass Ratio Inspirals, demonstrating that while IMRIs are robust against instrument degradation, extended observation significantly enhances EMRI detection ranges and enables stringent tests of strong-field gravity.
This paper presents a two-stage, graph-spectral method for screening post-merger gravitational-wave damping anomalies in real LIGO noise, which successfully achieves high detection accuracy (AUC = 0.943) by combining a leading-eigenvalue detectability statistic with an empirical null calibration and a nonlinear least-squares damping-time estimator.
This paper investigates the brick wall model for Reissner-Nordström and quantum-corrected black holes without relying on near-horizon approximations, demonstrating that this approach yields a logarithmic correction to the entropy that exceeds the standard Bekenstein-Hawking value, consistent with Barrow entropy.
This paper identifies two late-time evolutionary regimes for accreting axion clouds around compact objects—a collapse-driven "Bosenova" and a saturation regime—and demonstrates that the latter produces distinct, stable spectral lines that can be used to probe the global structure of the axion potential and its ultraviolet completion through terrestrial detection.