4431 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 characteristic modes of non-minimally coupled thick branes with single-kink and deformed scalar configurations, demonstrating that while the graviton zero mode is localized in both models, the deformed brane exhibits resonant Kaluza-Klein modes whose properties are closely correlated with the quasinormal modes calculated via independent frequency and time domain methods.
This paper demonstrates that levitated dielectric sensors with transverse dimensions matching the optical mode induce a nonperturbative regime where the sensor fundamentally restructures intracavity fields into coupled subcavities, leading to significant deviations from standard optomechanical predictions in resonance frequencies, trapping stiffness, and cooling capabilities.
This paper extends cosmological large-gauge transformations to local infinite-dimensional symmetries, identifying them as a new frame ambiguity affecting low-multipole modes and demonstrating that these adiabatic perturbations preserve the background's Killing symmetries, thereby classifying them as algebraically-special Petrov-type O modes.
This paper introduces a tunable entanglement structure in spin networks where internal links carry variable degrees of entanglement, demonstrating that in the large-spin limit, this framework realizes holographic and quantum error-correcting features by mapping bulk link configurations to boundary states via an isometric bulk-to-boundary map.
This paper demonstrates that while a thermal radiation plasma on a flat FLRW background induces a gapped collective mode in gravitational perturbations, the resulting superhorizon dynamics are governed by Weinberg's damping and Ward identity-compliant retarded responses rather than the spurious growth predicted by local-equilibrium approximations.
This paper establishes a scattering theory that rigorously links regular Cauchy data at to specific asymptotic blow-up data at the singularity for the scalar wave equation and linearized Einstein-scalar field system in Kasner spacetimes, revealing phenomena such as derivative gains and losses that depend sensitively on the background anisotropy and approach unboundedness near the regime's boundary.
This paper demonstrates that eight-dimensional holographic renormalisation is encoded in a unique conformal gravity theory that combines the Einstein-Hilbert action with a specific Euler term to cancel asymptotic divergences, leading to a conjecture that this equivalence between holographic renormalisation and conformal completion via topological regularisation holds in arbitrary even dimensions.
This paper presents the first successful training of Lagrangian Neural Networks on Schwarzschild geodesic motion by introducing a decoupled position-velocity normalization scheme and an energy-constrained sampling strategy, enabling the model to accurately reproduce relativistic effects and conserve physical quantities across diverse orbital regimes.
This paper demonstrates that exact gravitational solutions of the Skyrme model, including black holes, wormholes, and cosmologies, remain robust when extended from to , with key physical properties such as thermal stability, expansion dynamics, and wormhole throat size being systematically determined by the number of flavors and coupling constants.
This paper investigates holographic Krylov complexity in two confining bottom-up holographic QCD models, revealing that while massive particle complexity exhibits distinct behaviors (oscillatory vs. exponential) in the Einstein frame, both particle and string dynamics display oscillatory complexity in the string frame due to an infrared turning point, thereby highlighting the sensitivity of complexity to the choice of probe and conformal frame.