2677 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 proposes using Bose-Einstein condensates interacting with quantized gravitational waves to derive a quantum gravitational Fisher information metric, revealing that high graviton squeezing enables finite measurement precision at zero time and mitigates decoherence effects.
This paper extends the pragmatic mode-sum regularization method to the interior of a Kerr black hole by introducing a novel intermediate divergence subtraction to handle the divergence of the multipolar sum, thereby enabling the calculation of renormalized quantum fluxes and field squares for a massless scalar field in the Unruh state from the event horizon to the inner horizon.
This paper analyzes the analytical and algebraic properties of covariant quasi-linear PDE systems, particularly their principal symbols and well-posed Cauchy problems, to define pre-quantum configurations and "Cauchy bubbles" for evolution in compact spacetime regions, with a specific application to General Relativity.
This paper highlights how wet extreme mass-ratio inspirals (EMRIs) in active galactic nuclei serve as unique multi-messenger sources for space-borne gravitational wave detectors, offering unprecedented precision in measuring supermassive black hole properties, probing accretion disk physics through transient electromagnetic signals, and enabling percent-level cosmological measurements.
This paper demonstrates that upcoming gravitational wave observatories can probe the early universe's expansion history and determine the decay rate of scalar fields in supercooled first-order phase transitions by analyzing the imprints left by inefficient reheating on the stochastic gravitational-wave spectrum.
This study employs Bayesian MCMC analysis of diverse observational datasets to constrain a spatially flat gravity model, finding that it serves as a viable alternative to the standard CDM cosmology while potentially resolving the Hubble tension through a higher inferred value of .
By applying the Hawking Area Theorem, validated through gravitational wave data, as a consistency criterion for black hole entropy corrections, this study derives constraints on the spin-parity and number of Beyond-Standard-Model particle species that may serve as dark matter candidates.
This paper performs a canonical analysis of the Ashtekar-Barbero-Immirzi model to derive boundary constraint equations that depend solely on the Immirzi parameter, thereby establishing a framework with independent conjugate fields that aligns with standard Loop Quantum Gravity results and outlines a scheme for quantization.
This study proposes that self-bound hybrid stars characterized by strong phase transitions and large density discontinuities can simultaneously resolve multiple observational tensions regarding the masses, radii, and tidal deformabilities of various compact objects, including anomalous low-mass pulsars, the massive GW190814 secondary, and standard NICER measurements.
This paper investigates the gravimagnetic dipole spacetime formed by two counter-rotating black holes in equilibrium via a tensionless Misner string, deriving the velocities of circular rotation trajectories for both massive and massless particles along their geodesics.