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 presents an all-sky search for long-duration gravitational-wave transients using data from the first part of the LIGO-Virgo-KAGRA fourth observing run (O4a), reporting a 30% average improvement in sensitivity limits over the previous run despite finding no significant detections.
This paper systematically extends the framework of galaxy bias renormalization to two-loop order by deriving explicit renormalization results for a minimal basis of 29 deterministic operators, incorporating stochasticity, and establishing two-loop renormalization group equations that reveal enhanced UV sensitivity and suggest potential applications of quantum field theory resummation techniques.
This paper proposes using thermal imaging of test mass surfaces to generate critical error signals for real-time wavefront control, a technique capable of overcoming thermal distortions at high laser powers to significantly improve the sensitivity and detection range of current and future gravitational-wave detectors like LIGO A+ and Cosmic Explorer.
This paper proposes that luminous fast blue optical transients (LFBOTs) are electromagnetic signatures of "failed" gravitational wave sources, specifically resulting from the delayed dynamical instability of black hole–helium core binaries where the black hole plunges into and disrupts the donor star, generating super-Eddington accretion and powerful outflows that match observed LFBOT characteristics.
This paper constructs and analyzes spherically symmetric boson star solutions in spacetime dimensions with quartic self-interaction and solitonic potentials, demonstrating through both generalized perturbative stability analysis and nonlinear dynamical evolutions that stable higher-dimensional configurations exist and remain robust under spherical perturbations.
This paper proposes a novel method that leverages phase information from multiple nanohertz continuous gravitational wave sources to infer pulsar distances in two dimensions, demonstrating through simulations that this approach can achieve sub-parsec precision and significantly improve host-galaxy identification for gravitational wave sources.
This paper proposes that the Hubble tension arises from systematic biases in local distance measurements caused by the heliospheric environment's thermal and particle effects on Cepheid variables and Type Ia supernovae, potentially accounting for 3–8% of the observed discrepancy.
Using LIGO data from the first part of the fourth observing run, this study sets the first sub-torque-balance upper limits on continuous gravitational waves from Scorpius X-1 in the 50–200 Hz range, arguing against torque balance for a hadronic neutron star and significantly improving sensitivity depth over previous searches.
This paper assesses the current observational status of single scalar field dark energy models, concluding that while they remain a viable and flexible framework, they are currently only marginally distinguishable from a cosmological constant due to fundamental observational limits and persistent underdetermination, necessitating improved low-redshift growth measurements and a deeper understanding of gravitational screening for future validation.
This paper demonstrates that a full off-diagonal Rényi quantum focusing statement does not hold for any Rényi-type divergence satisfying data processing, tensor additivity, and matched classical–quantum conditioning, thereby answering negatively the question of whether such a generalization follows from the diagonal Rényi quantum null energy condition.