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 proposes a covariant multi-scale framework that resolves the limitations of geodesic flow in general relativity by decomposing spacetime into hierarchical regions, providing a first-principles foundation for cosmological zoom-in simulations that naturally explains flat galaxy rotation curves through geometric backreaction without requiring dark matter.
This paper demonstrates that tree-level cosmological wavefunctions in theories are uniquely determined by locality and a newly discovered set of hidden zeros that enforce a dual "shuffle" factorization principle, thereby extending on-shell methods and the zeros-BCFW correspondence from flat-space scattering amplitudes to cosmology.
This paper investigates how minimal length effects from quantum gravity modify Keplerian scattering and gravitational lensing, demonstrating that these corrections reduce scattering angles and weaken lensing for massless particles, while using Einstein ring observations to estimate the associated deformation parameters for the electron and Mercury.
This paper proposes a Yang-Mills type gauge theory of gravity that, by treating full connections as independent dynamical fields, naturally generates non-trivial vacuum configurations capable of explaining galactic rotation curves and gravitational lensing without requiring exotic dark matter particles.
This paper proposes a Yang-Mills gauge theory of gravity that eliminates the need for scalar fields or a cosmological constant by deriving a singularity-free coasting expansion to resolve the JWST early galaxy crisis and a subsequent topologically driven exponential acceleration to explain late-time cosmic acceleration.
This paper extends the concept of channel-state duality to Hilbert spaces with a direct sum structure arising from algebras with centers, establishing a general relationship between state non-separability and channel isometry while generalizing the framework to infinite-dimensional systems relevant to quantum many-body theory and holography.
This paper proposes that realistic stochastic gravitational wave backgrounds can induce the production of Weyl fermions at the 1-loop level, offering a potentially more efficient mechanism than conventional expansion-driven processes to explain the abundance of fermionic dark matter if these particles subsequently acquire mass.
This paper presents a relativistic cosmological perturbation theory that uniquely defines energy and particle number density perturbations to explain the mass and formation times of the universe's earliest structures, attributing their rapid initial growth to negative nonadiabatic pressure perturbations arising during the matter-radiation decoupling era.
This paper applies an ADM deparametrization strategy to radial canonical gravity in three dimensions to clarify holographic interpretations through identified radial 'volume time' and 'true' degrees of freedom, while also discussing York time, conformal boundary conditions, and constructing a BTZ wavepacket solution to the radial Wheeler-DeWitt equation.
This paper proposes a non-Hermitian tight-binding model with gain/loss and non-reciprocal hopping that emulates black-hole physics by mapping a 1D lattice interface to a Schwarzschild metric, enabling the theoretical calculation of Hawking radiation, temperature, entropy, and mass, along with a proposed experimental realization for detecting these elusive features.