3805 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 a quantum tadpole identified in fuzzy sphere geometry, which induces surface tension and contraction when isolated, necessitates a coupling to gravity that selects a non-singular de Sitter interior and establishes a specific large- relationship between internal de Sitter time and external Schwarzschild time.
This paper develops a phase-space S-matrix framework that unifies classical scattering observables—such as waveforms, impulses, and angular momentum—by partially Weyl-transforming the matter sector, revealing how nonlinear gravitational memory, radiation reaction, and static-field effects emerge from an inclusive coherent waveshape and its associated quantum geometric structure.
This paper demonstrates through N-body simulations that significant small-scale isocurvature perturbations in a subdominant ultralight dark matter component can lead to its stochastic dominance in the centers of small halos, offering a potential explanation for the observed diversity of galaxy cores.
This paper investigates the properties of compact stars in a generalized teleparallel gravity model, analyzing their maximum masses and compactness relative to General Relativity and deriving a constraint that limits the parameter to positive integers.
This paper argues that constructing Glauber-Sudarshan states resolves key challenges in quantum gravity, such as defining correlation functions without a bulk Hamiltonian and accounting for fluctuation back-reactions, by utilizing time-dependent displacement operators and Schwinger-Dyson equations to explain the emergence of a transient de Sitter phase from a supersymmetric Minkowski background.
This paper revisits scalaron dark matter in gravity by resolving previous ambiguities in its one-loop decay rate into photons, demonstrating that the resulting cosmological radiation is consistent with observations while confirming that primordial scalaron production is negligible, thereby supporting the scenario where scalarons constitute all dark matter as a coherently oscillating field.
This paper investigates the implications of modified Painlevé-Gullstrand coordinates for Kiselev black holes surrounded by quintessence by constructing a static line element with a deformation parameter, analyzing radiation and dust effects via the barotropic index, and deriving closed-form expressions for Hawking temperature and entropy.
This paper proposes a "Radiative Inflation and Dark Energy" (RIDE) model based on a complex scalar field with radiative corrections and non-minimal gravity coupling, which successfully reconciles chaotic inflation predictions with recent ACT and Planck observational data by adjusting the tensor-to-scalar ratio and spectral index.
This paper proposes a novel spin-orbit resonance mechanism in compact star binaries driven by intrinsic ellipticity that produces a detectable gravitational-wave phase signature, offering a new observational channel to probe ellipticity in objects like magnetars, though a search of current O4a catalog data has yielded no confirmed detections.
This paper proposes a non-relativistic cosmological collider framework where a massive tilted-ghost spectator field generates distinctive squeezed-limit non-Gaussianity through propagation-induced mode deformations rather than boost-breaking interactions, effectively mimicking boostless collider signals via a unique chemical-potential-like mechanism.