3256 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.
By employing the generalized free energy landscape and solving the Fokker-Planck equation, this study elucidates the time-dependent probability evolution of RN-AdS black hole phase transitions, revealing that barrier crossing is fundamentally driven by maximum thermodynamic dissipation as evidenced by a peak in the entropy production rate.
This paper presents the hardware overview and commissioning status of the CHRONOS detector, a cryogenic sub-Hz torsion bar interferometer incorporating quantum non-demolition speed meter techniques, which is designed to detect intermediate-mass black hole mergers and stochastic gravitational wave backgrounds by overcoming low-frequency noise limitations.
This paper demonstrates that in JT gravity coupled to a large- bath, the capacity of entanglement serves as a sensitive probe to detect finite- replica structure within the factorized island branch that remains invisible to the von Neumann entropy at late times.
This paper presents the noise budget analysis and performance evaluation of CHRONOS, a proposed cryogenic sub-Hz gravitational-wave detector utilizing a cross torsion-bar configuration and quantum speed meter readout, demonstrating its potential to achieve competitive low-frequency sensitivity while also enabling faster earthquake early warnings through prompt gravity-gradient detection.
This paper establishes and validates two precise quantum field theory prescriptions for deriving geodesic motion from localized single-particle states in global AdS: one based on the covariant expectation value of the stress tensor and another utilizing position operators derived from the Klein-Gordon inner product, thereby demonstrating how bulk localization and classical trajectories emerge from the distribution of CFT states over global descendants.
This paper establishes that static, spherically symmetric, infinitesimally thin shells composed of perfect fluid are dynamically unstable across all angular scales in both general relativity and Newtonian gravity, rendering them nonviable models for black-hole mimickers.
This paper numerically demonstrates the linear stability of the two-dimensional MSW stringy black hole under intrinsic metric-dilaton perturbations by showing that all quasinormal modes have negative imaginary frequencies, while revealing that these intrinsic modes exhibit oscillatory behavior and relaxation dynamics distinct from external scalar-field perturbations.
This paper forecasts that space-based observations of extreme-mass-ratio inspirals by LISA can constrain near-horizon multipolar deformations at unprecedented precision levels, offering the first direct empirical tests to distinguish between classical Kerr black holes and quantum-gravity-inspired fuzzball geometries.
This paper investigates how LISA observations of Extreme-Mass-Ratio Inspirals can probe deviations from the Kerr black hole paradigm by modeling axisymmetric and non-axisymmetric symmetry-breaking multipole moments, demonstrating that LISA can tightly constrain equatorial and axial symmetry breaking to and levels respectively, thereby testing General Relativity and alternative theories like string theory.
This paper calculates the leading-order long-range gravitational potential arising from the non-minimal coupling in perturbative quantum gravity, demonstrating that the effect emerges at the one-loop level with a characteristic behavior and exhibits distinct spin and polarization dependencies for scalar, spin-1, and spin-1/2 fields.