2593 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 embedding natural inflation within Palatini gravity, specifically with the model where , restores its consistency with observational data, whereas models with fail to provide comparable improvements.
This paper demonstrates that environmental decoherence during inflation induces a "cosmic lockdown" via the quantum Zeno effect, which suppresses quantum tunneling and stabilizes false-vacuum occupation for light scalar fields by locking them into stochastically selected local minima.
This paper demonstrates that peculiar velocities grow significantly faster in general relativity than in Newtonian gravity because relativistic theory accounts for the gravitational contribution of kinetic energy (peculiar flux), a factor absent in Newtonian models, thereby offering a potential explanation for observed large-scale bulk flows that challenge the standard CDM paradigm.
This paper proposes a quantum-gravitational framework based on Schwarzian theory and ensemble averaging to resolve the cosmological constant problem by deriving the observed dark energy density and equation of state from the ensemble average of time-reparametrization modes.
This paper demonstrates that environmental phase modulation in gravitational-wave signals, such as those caused by hierarchical triple motion, can be detected in a template-free manner using time-frequency trajectory statistics, with detection performance governed by a universal scaling law where the product of cumulative phase distortion and signal-to-noise ratio determines observability.
This paper establishes a universal relation between the energy-momentum tensor two-point function coefficient and the Weyl anomaly coefficient in generic even-dimensional conformal field theories, deriving the result through both holographic methods utilizing a Chern-Gauss-Bonnet formula and a genuine CFT approach based on renormalization group running.
This paper proposes a class of inhomogeneous relativistic cosmological models where matter behaves like quasi-dust, demonstrating that local gravitational potential backreaction can generate an effective dark-energy term that mimics cosmic acceleration in observations while the universe remains fundamentally decelerating.
This paper utilizes the Euclidean Gravity approach to demonstrate that spatially varying near-horizon temperature fluctuations in a Schwarzschild Black Hole are intrinsically linked to near-horizon supertranslations, allowing the derivation of temperature-dependent corrections to the free energy and a microscopic partition function that describe low-energy horizon physics as a sum over these supertranslations.
This study investigates how dark matter and non-magnetized plasma influence the shadow and photon orbits of a Kerr-like black hole, revealing that while dark matter has negligible effects, plasma density significantly alters shadow size and deformation depending on its distribution profile, with these findings being constrained by Event Horizon Telescope observations of M87* and Sgr A*.
This paper extends the study of booklet wormholes as the holographic dual of the GHZ state by demonstrating that their symmetry necessitates special bulk Killing vectors and unprecedented quantum non-local junction conditions, while also proposing a mechanism to render them traversable through boundary deformations that distribute information via entanglement.