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.
This paper investigates the existence and viability of three-dimensional black bounce solutions in gravity, analyzing their generalization from general relativity, constructing new zero-curvature solutions supported by scalar-nonlinear electrodynamics couplings, and evaluating the associated energy conditions and scalaron mass behavior.
This paper introduces a unified symmetry-based framework that establishes a criterion for identifying and constructing hierarchical ladder structures in second-order linear differential equations, revealing deep connections between supersymmetric quantum mechanics and diverse physical systems ranging from quantum oscillators to the tidal response of Kerr black holes.
This paper investigates the optical properties and Hawking radiation characteristics of Skyrmion black holes, demonstrating how the Skyrme term and geometric parameters influence the photon sphere, shadow shape, and energy emission spectra to provide potential observational signatures of nonlinear field effects in modified gravity.
This paper formulates the Late-Transition Interacting Thawer (LTIT) model, a constrained coupled quintessence framework that decouples late-time expansion history deformations from pre-recombination calibration shifts, providing exact background and perturbation equations to demonstrate that its viability depends on satisfying strict perturbation-level closure tests rather than merely fitting background data.
This paper argues that determining spontaneous Lorentz symmetry breaking in the Bumblebee model requires analyzing the Hamiltonian density rather than the Lagrangian potential, revealing that standard quadratic potentials fail to generate consistent vacuum expectation values and that smooth potentials only support stable timelike or lightlike vacua.
This paper strengthens the established result on the linear instability of the Kerr Cauchy horizon, providing a crucial component for the proof of its non-linear instability.
The CHRONOS paper proposes a novel ground-based cryogenic torsion-bar detector utilizing a Sagnac speed-meter readout to overcome seismic and quantum noise limitations, thereby enabling sub-Hz gravitational-wave observations of intermediate-mass black holes and stochastic backgrounds in the currently unexplored frequency band between space-based and ground-based interferometers.
This paper provides a falsification-oriented catalogue of experimentally testable predictions derived from the octonionic unification program, mapping its ambitious synthesis of quantum foundations, particle physics, and cosmology to specific observables such as objective collapse, dark sectors, and precise mass relations to demonstrate the framework's internal coherence and vulnerability to empirical refutation.
This paper rederives a previously questioned de-excitation probability formula for a quantum scalar field in an accelerated cavity using a perturbation theory calculation formulated entirely within the relevant Rindler wedge, thereby addressing concerns about the use of causally disconnected modes in the original work.
This paper optimizes entanglement harvesting between two local probes coupled to a scalar field vacuum with arbitrary temporal profiles by employing a Hermite expansion to compute propagators and recast negativity as a matrix product, thereby enhancing entanglement by orders of magnitude and pushing experimental proposals beyond the limits of second-order perturbation theory.