2489 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 details the public release of open data from the LIGO, Virgo, KAGRA, and GEO gravitational-wave network via the Gravitational Wave Open Science Center, encompassing calibrated strain time series and analysis products from the second part of the fourth observing run (O4b) and selected engineering run periods spanning April 2024 to January 2025.
This paper offers an introduction to the cosmological multiverse for artists, explaining how general relativity and the cosmological constant lead to the multiverse hypothesis as a solution to a major puzzle, while also highlighting the unresolved "measure problem" regarding predictions in eternally accelerating universes.
This paper investigates Gravitoelectromagnetism in the Weyl formalism by deriving its propagator and demonstrating that a restricted gauge symmetry, which decouples the spin-1 sector and necessitates a Lorentz-like gauge condition, ensures the theory couples to matter identically to linearized General Relativity through diffeomorphism-like transformations.
This paper introduces GWTC-5.0, the fifth version of the Gravitational-Wave Transient Catalog, which expands the dataset to include observations through January 28, 2025, and reports over 300 detected merging binary systems to facilitate further research into the gravitational-wave universe.
This paper outlines the complex analysis methods, including signal modeling, data quality assessment, and parameter inference, employed by the LIGO-Virgo-KAGRA Collaboration to identify and characterize gravitational-wave transients for the fifth release of the Gravitational-Wave Transient Catalog (GWTC-5.0) based on data from the second part of their fourth observing run.
This paper presents GWTC-5.0, an updated catalog that incorporates 150 new compact binary coalescence candidates detected during the second part of the fourth LIGO-Virgo-KAGRA observing run, bringing the total number of confirmed gravitational-wave transients to 390 and highlighting the discovery of an exceptionally strong binary black hole signal (GW250114_082203) with a network signal-to-noise ratio exceeding 70.
Using data from the 267 merging compact binaries in the GWTC-5.0 catalog, this study characterizes the population properties of binary black holes, revealing a merger rate of 27.5–49.4 Gpc⁻³ yr⁻¹, evidence for a subpopulation of rapidly spinning black holes indicative of hierarchical mergers, and distinct features in the mass and spin distributions including a peak near 10 M☉ and a slope change around 35 M☉.
Using 236 gravitational-wave sources from the GWTC-5.0 catalog, this study refines the Hubble constant estimate to km s Mpc with a 25.7% reduction in uncertainty compared to previous results and confirms no deviations from general relativity in gravitational-wave propagation.
This paper introduces the -probe, a novel, model-independent diagnostic derived from the $Om(z)$ function that enables the direct and robust estimation of the current dark energy equation of state () without amplifying noise through differentiation, revealing that current observational data favors an evolving dark energy model with and excludes the standard CDM model at the 95% confidence level.
This paper numerically investigates strong gravitational lensing by black holes embedded in self-interacting scalar field dark matter halos, finding that while most observables show only minute deviations from the Schwarzschild case, time delays between relativistic images offer the most promising signature for detecting such dark matter environments around supermassive black holes.