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 demonstrates that finite population and windowing effects inherent to real astrophysical sources introduce unmodeled non-Gaussianities into pulsar timing array signals, challenging the standard assumption of a purely Gaussian gravitational wave background.
This paper demonstrates that the Taiji space-based gravitational-wave detector can effectively probe the complex singlet extension of the Standard Model by performing Bayesian and Fisher-matrix analyses to constrain Higgs self-couplings through the detection of electroweak phase transition signals, thereby highlighting the complementarity between gravitational-wave observations and collider physics.
This paper develops a quantum field theoretic framework for a Bose-Einstein condensate simulator that maps to a dispersive cosmological spacetime, demonstrating how time-dependent interactions can analogously produce scale-invariant power spectra while revealing specific Trans-Planckian damping effects that modify the spectrum in the ultraviolet regime.
This paper employs state-of-the-art LISA simulations and Bayesian analysis to evaluate the observatory's capability to detect and characterize the gravitational-wave displacement memory effect from individual massive black hole binary mergers, thereby establishing detection criteria, reconstruction precision, and expected event rates for testing General Relativity.
This paper numerically constructs and analytically characterizes a family of critical spacetime crystals in arbitrary continuous dimensions , generalizing Choptuik's four-dimensional solution to provide the echoing period and Choptuik exponent as continuous functions of and revealing their vanishing behavior as approaches 3.
This paper demonstrates that Scalar-Tensor-Vector Gravity (STVG-MOG) can reproduce the Cosmic Microwave Background acoustic power spectra of the standard CDM model without particle dark matter by utilizing nonrelativistic excitations of a massive vector field that dynamically mimic a pressureless dust component in the early universe.
This paper investigates the properties of rotating Kaluza-Klein black holes surrounded by massive vector and scalar fields, analyzing their horizon structure, thermodynamic phase transitions, topological classification, and astrophysical signatures like shadows and accretion disks to demonstrate how extra-dimensional effects modify observable features while preserving the system's fundamental topological stability.
This paper presents a semiclassical framework combining 2D dilaton gravity and Polyakov anomaly backreaction to demonstrate that Reissner–Nordström–de Sitter black holes undergo rapid discharge via Schwinger pair production followed by monotonic mass loss, ultimately evolving toward empty de Sitter space rather than settling into classical extremal or lukewarm attractors.
This paper investigates how quartic scalar self-interactions influence asymptotically flat, balanced configurations of two spinning black holes with synchronised scalar hair, revealing that repulsive interactions drive topological changes in ergoregions and broaden analytical models but cannot increase horizon mass, whereas attractive interactions are required to achieve larger mass fractions.
This paper investigates the conformal anomaly in a vector field model by introducing an auxiliary scalar compensator to preserve gauge symmetry and unitarity within dimensional regularization, revealing that this scalar acquires independent dynamics and exhibits unique properties in the four-dimensional limit.