3040 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 uses analytical and numerical simulations to demonstrate that supermassive black hole binaries decouple from their circumbinary disks earlier than previously predicted, a process that significantly alters accretion patterns and could provide a detectable electromagnetic signature for gravitational wave events.
The paper classifies all axis-symmetric non-gradient -quasi-Einstein structures on a two-sphere, identifying the extreme Kerr black hole horizon as a specific case and providing new regular metrics for other values of expressed via hypergeometric functions.
This paper demonstrates that the "polarization wiggling" of electromagnetic radiation—an effect caused by gravitational fields—can be used to independently measure the vector and tensor components of gravity, including the angular momentum of a source and the full state parameters of gravitational tensor modes.
This paper investigates gravitational wave amplitude birefringence induced by the coupling of fuzzy dark matter to the Chern-Simons term, finding that the effect is characterized by a frequency-dependent enhancement/suppression of circular polarizations and a periodic time modulation reflecting the dark matter mass.
The authors demonstrate that the minimal dRGT massive gravity theory can be formulated as a strongly hyperbolic first-order system around a Minkowski background, suggesting that its Cauchy evolution is well-posed despite its usual interpretation as a low-energy effective field theory.
This paper investigates the thermodynamics and phase structure of a deformed AdS-Schwarzschild black hole generated via gravitational decoupling, demonstrating how the deformation parameter drives diverse phase transitions in both the bulk and its dual conformal field theory across various thermodynamic ensembles.
This paper uses the Novikov-Thorne thin-disk model and semi-analytic ray-tracing to study how different scalar field configurations in hybrid metric-Palatini gravity affect the appearance of accretion disks around black holes, identifying specific deviations from General Relativity that could serve as observational signatures.
This paper develops a framework using S-star orbital dynamics to constrain the environment around Sgr A*, specifically extending limits on boson clouds and demonstrating that while dense matter can cause orbital decay via dynamical friction, the effect is masked by cluster replenishment.
The paper proposes that using more realistic, generalized probability distributions for host galaxy dispersion measures () can resolve the tension in Hubble constant () measurements derived from Fast Radio Bursts, providing a more accurate cosmological tool than current models that rely on artificially narrow priors.
This paper provides a detailed canonical analysis of Pontryagin and Euler topological invariants by introducing Holst-like variables and a Barbero-Immirzi parameter, ultimately determining the theory's constraints, degrees of freedom, and its connection to self-dual representations.