2558 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 within single-field inflation models, large-scale modes constrained by CMB observations decouple from small-scale enhancements required for primordial black hole production, ensuring that 1-loop back-reaction effects remain unobservable and do not disrupt large-scale predictions.
This paper constructs a traversable wormhole in the near-extremal Kerr background by applying a fermionic double-trace deformation, demonstrating that the absence of fermionic superradiance allows for stable wormhole opening across all regions while producing observable echoes with time delays bounded by the black hole's scrambling time.
This paper demonstrates that modeling dust collapse within Asymptotically Safe gravity, where the gravitational coupling vanishes at high energies due to a specific matter-geometry coupling function, leads to the formation of regular black holes that are entirely free of singularities.
This paper proposes the Artificial Precision Timing Array (APTA), a novel gravitational-wave detector concept utilizing a constellation of precision-timing satellites to bridge the decihertz sensitivity gap and observe intermediate-mass black hole mergers and early inspirals with currently attainable clock technology.
This paper investigates thermodynamic chaos in Hayward AdS black holes with string fluids using Melnikov's method, revealing that while charge is essential for chaos under temporal perturbations, spatial perturbations induce chaos regardless of charge, with both the string fluid density and Hayward regularization parameter significantly influencing the Lyapunov exponent.
This paper develops a canonical formalism using Dirac brackets to demonstrate that the quantum metric in momentum space modifies the phase-space density of states at order , thereby correcting Liouville's theorem and extending chiral kinetic theory to include nonlinear effects consistent with quantum field theory.
This paper proposes using a Legendre polynomial basis instead of the traditional Fourier basis for pulsar timing array analysis to simplify the incorporation of pulsar modeling effects and derive analytic closed-form expressions for the Hellings and Downs correlation estimator and its variance when power spectra follow power laws.
Through a reanalysis of data from the CAPP-12T MC-Axion Haloscope experiment, this study establishes exclusion limits for monochromatic high-frequency gravitational waves for the first time, demonstrating the suitability of electromagnetic resonant cavities as detectors and constraining black hole superradiance scenarios involving axion clouds.
This paper introduces the Dual-Channel Lensing feature extraction eXtended Long Short-Term Memory Network (DCL-xLSTM), a highly efficient deep learning model that achieves over 99% AUC in detecting lensed gravitational waves across the millihertz band by effectively capturing amplitude patterns spanning the wave-to-geometric optics transition.
The paper presents a static, spherically symmetric "Superball of Strings" solution in the low-energy limit of string theory, arguing that this horizonless fuzzball configuration describes generic BPS microstates that share the same asymptotic boundary conditions as a singular extremal black hole.