3949 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 particle creation during non-singular gravitational collapse where quantum gravity induces a bounce, demonstrating that the resulting spontaneous emission probability deviates from standard Hawking radiation and implies a non-thermal spectrum, while also suggesting this process could resolve shell crossing singularities.
This paper constructs complete families of regular, asymmetric wormhole solutions in Einstein-Dirac-Maxwell theory that connect two identical Minkowski spacetimes, demonstrating that their physical properties, including the possibility of negative ADM mass, are fully determined by the throat parameter, spinor frequency, and coupling constant.
This paper evaluates whether gravity and phenomenological models can resolve the Hubble tension while remaining consistent with DESI DR2 BAO data, finding that while an exponential model slightly alleviates parameter space tensions, no theoretically motivated solution successfully reconciles the Hubble tension with all observational datasets, particularly local measurements.
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.