3003 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 Hamilton-Jacobi theory, when applied with appropriate solution branches, successfully describes gauge-invariant scalar perturbations transitioning from slow-roll to ultra-slow-roll inflation, revealing that the limit is unphysical for asymptotic long-wavelength solutions and refining the understanding of stochastic equations in such regimes.
This paper proposes a construction of fiducial observers in the near-extremal black hole throat within JT quantum gravity by extending asymptotic time translations via conformal isometries, which enables the calculation of quantum gravitational wormhole contributions to the thermal atmosphere, yielding a finite thermal entropy and a quantum description of the stretched horizon.
This paper investigates the thermodynamic and optical properties of Einstein-Dyonic-ModMax black holes by incorporating Generalized Uncertainty Principle corrections and plasma effects, revealing that non-linear electrodynamics and quantum gravity modifications lead to stable remnants, frequency-dependent lensing signatures, and rich phase transition structures.
This paper extends the stochastic formalism to interacting inflationary theories by incorporating one-loop quantum field theory corrections into the noise amplitude, demonstrating that the standard noise term is modified by the fractional correction to the power spectrum, a result applied to the three-phase SR-USR-SR scenario relevant for primordial black hole formation.
This paper proposes using lattice simulations to directly calculate the energy density spectra of scalar-induced gravitational waves with non-Gaussianity up to all orders, revealing that even modest non-Gaussianity significantly alters ultraviolet behaviors and necessitates careful consideration for future detections and primordial black hole constraints.
Using the NANOGrav 15-year data set, this study presents the first targeted searches for continuous gravitational waves from 114 active galactic nuclei, finding no significant evidence for supermassive black hole binaries but demonstrating improved sensitivity through electromagnetic priors and establishing a roadmap for future multimessenger detections.
This study reveals that in Schwarzschild spacetime, increasing the excitation number of multipartite states under the Hawking effect degrades quantum entanglement and mutual information while simultaneously enhancing quantum coherence, thereby offering a trade-off for optimizing different quantum information protocols in gravitational settings.
This paper presents the first non-linear numerical simulation of spherically symmetric neutron stars using the causal and stable BDNK viscous hydrodynamics framework under the Cowling approximation, demonstrating stable evolutions and analyzing quasi-normal mode frequencies as a foundational step toward fully consistent astrophysical models.
This paper proposes the Artificial Pulsar Polarization Arrays (APPA), a satellite network designed to overcome the observational uncertainties of ground-based methods, demonstrating through simulations that it offers superior sensitivity and tighter constraints on axion-like dark matter coupling in the – eV mass range compared to conventional approaches.
This paper establishes that the semi-permeability of time-oriented null hypersurfaces is a fundamental geometric consequence of their null nature, leading to the introduction of "barriers" and "black regions" as simplified, locally defined tools for characterizing and locating event horizons and black holes in Lorentzian manifolds.