3826 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 proposes that Einstein-Cartan gravity emerges from the spontaneous symmetry breaking of a pre-geometric SO(1,4) or SO(3,2) gauge theory via a Higgs-like mechanism, thereby deriving fundamental concepts like the metric, diffeomorphism invariance, and the equivalence principle while offering a potentially renormalizable path to the ultraviolet completion of gravity.
This study demonstrates that a theoretically-informed template bank, constructed from state-of-the-art numerical simulations and implemented in the open-source SynthGrav package, can effectively detect and reconstruct core-collapse supernova gravitational-wave signals in real LIGO-Virgo-KAGRA data, recovering approximately 90% of injections at 1 kpc for well-matched models while highlighting the need for further improvements to address signal-template mismatches.
By leveraging recent theoretical advancements regarding the "memory burden" effect that halts the evaporation of light primordial black holes, this study establishes new and tighter upper limits on the primordial curvature power spectrum within the previously underexplored small-scale range of to .
This paper demonstrates that nonlocal gravitational interactions, specifically within Infinite Derivative Gravity theories, can circumvent the Weinberg no-go theorem to explain cosmic acceleration and the cosmological constant without requiring fine-tuning or additional matter fields.
This paper argues that the Generalized and Extended Uncertainty Principles are effective descriptions of non-local gravitational interactions in Infinite Derivative Gravity, using their comparison with non-local black hole solutions to derive theoretical constraints on free parameters and establish universal laws for black hole physics beyond General Relativity.
This paper demonstrates through Bayesian inference that quarkyonic matter equations of state are consistent with current neutron star observations and identifies specific mass-radius signatures, such as curve curvature and central sound speed, that can distinguish neutron stars with quarkyonic cores from those without.
This paper constructs and analyzes a class of static, spherically symmetric spacetimes in Painlevé-Gullstrand coordinates sourced by classical electrostatic configurations, systematically evaluating their energy conditions and singularity structures to explore gravitational effects without exotic matter.
This paper employs a worldline effective field theory to develop a systematic framework for binary black holes with bosonic clouds on generic eccentric and inclined orbits, revealing how resonant and non-resonant interactions drive unique orbital evolutions like floating orbits and inclination-dependent fixed points that produce distinctive gravitational-wave signatures for future detectors.
This paper presents a quantitative analysis demonstrating that claims of "exceptionality" in gravitational-wave events, such as GW241110's spin misalignment, are often artifacts of measurement uncertainty relative to population width rather than evidence of truly extreme physical properties, while confirming that GW231123's high mass remains robust against such effects.
This paper formulates a dual version of the generalized second law of black hole thermodynamics from the perspective of asymptotic observers at future null infinity, demonstrating that the monotonic quantity governing irreversible evolution is a thermodynamic potential (such as free energy or a generalized grand potential) constructed from asymptotic observables rather than the black hole area.