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 extends the higher-dimensional quantum-corrected Oppenheimer-Snyder model to include a cosmological constant, demonstrating that in Anti-de Sitter spacetime, quantum corrections prevent temperature divergence for small black holes and induce a new phase transition in their thermodynamic behavior.
This paper demonstrates that rotating black holes surrounded by superradiant boson clouds can act as natural gravitational-wave amplifiers through a stimulated emission mechanism, potentially enhancing faint signals by several orders of magnitude to bridge the sensitivity gap between current ground-based detectors and pulsar timing arrays.
This paper investigates Frenet-Serret equations for timelike worldlines in Minkowski spacetime with variable proper acceleration and torsion, relating intrinsic geometric parameters to kinematic quantities like four-jerk and four-snap to clarify how non-uniform acceleration modifies the geometry of relativistic motion.
By combining multi-messenger constraints on the equation of state with general-relativistic hydrodynamics simulations, this study demonstrates that current data tightly restricts the uncertainty of the dominant post-merger gravitational-wave frequency to approximately 100 Hz, implying that future deviations from this prediction would signal new physics such as a finite-temperature hadron-quark transition.
This paper applies a mesoscopic coarse-graining framework to establish a non-perturbative lower bound on kinematic backreaction, explain the failure of standard perturbation theory via KAM theory at the non-linear scale, and derive a gauge-invariant mutual information measure computable from the matter power spectrum to quantify backreaction corrections.
This paper investigates how perturbatively stabilized brane-antibrane inflation can lead to a post-annihilation open-string Hagedorn phase in the visible sector, potentially suppressing dark radiation () depending on the relative locations of the Standard Model and annihilation throats and their respective string scales.
This paper presents a robust framework for incorporating line-of-sight acceleration effects into state-of-the-art gravitational-wave waveform models with higher harmonics and eccentricity, revealing that inconsistent treatment of these effects can bias results while finding no substantial evidence for such acceleration in analyzed LIGO-Virgo events.
This paper extends a previous quantum information-based analysis of gravity by incorporating leading-order post-Newtonian corrections to a Bose-Einstein condensate detector model, demonstrating that while these relativistic effects slightly dampen the signal-to-noise ratio, non-Gaussianity remains a unique signature of quantum gravity that can be isolated from electromagnetic interactions via Feshbach resonances.
This paper demonstrates that the canonical Weyl coordinate choice is incompatible with a non-zero cosmological constant because the area function ceases to be harmonic, thereby clarifying that the restriction on Weyl metrics applies specifically to the coordinate system rather than to static axisymmetric Einstein spaces in general.
This paper introduces quantum reference fields within linearized quantum gravity to formulate a relational description of spacetime, deriving unitary transformations that implement local quantum coordinate changes between different internal perspectives and demonstrating how these relational observables can be accessed operationally.