3884 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 establishes a locality condition on the quantum state of hard modes as a unified criterion that ensures the validity of the gradient expansion for inflationary soft modes, suppresses hard-mode loop corrections, guarantees infrared regularity, and underpins generalized soft theorems.
This paper forecasts that strongly lensed gravitational wave events, when combined with galaxy survey data and observed by next-generation detectors like the Einstein Telescope and Cosmic Explorer over a decade, can provide an independent and systematic-different measurement of the cosmic dipole to resolve tensions with traditional radio galaxy count observations.
This phenomenological study investigates the physical properties and stability of compact bosonic stars in Anti-de Sitter spacetime by modeling three distinct radial mass profiles (exponential, quadratic, and power-law), demonstrating that these configurations satisfy energy conditions, remain within Buchdahl's limit, and represent stable stellar models rather than collapsing objects.
This paper demonstrates that in quasi-topological gravity, neutron stars can achieve compactness exceeding the black-hole limit and exhibit enhanced radial stability at high central densities, establishing them as theoretically viable ultra-compact configurations.
This paper compares perturbative and fully numerical approaches for modeling magnetized neutron stars with purely poloidal fields, finding that while the perturbative method (Konno-99) is accurate for observed magnetar fields but fails at extreme strengths ( G), the fully numerical LORENE code struggles with resolution issues at lower field strengths ( G).
This paper proposes a non-singular quintessential inflation model within Loop Quantum Cosmology coupled with Mass-Varying Neutrinos that successfully unifies early-universe inflation and late-time dark energy while resolving the Big Bang singularity and remaining consistent with current precision cosmological observations.
Using quantum field theory of linearized gravity, the paper demonstrates that the Berry curvature of right- and left-handed gravitons induces a spin Hall effect in curved spacetime, resulting in a helicity-dependent energy current splitting that is exactly twice the magnitude of the corresponding effect for photons.
This paper investigates the scattering and absorption of charged massive scalar fields by a Reissner-Nordström black hole immersed in perfect fluid dark matter, revealing that increasing dark matter density significantly suppresses absorption while enhancing superradiant amplification compared to the standard Reissner-Nordström case.
This paper presents a recursive perturbative expansion of the Kerr black hole metric in harmonic gauge as a double series in Newton's constant and the spin parameter, detailing the challenges of re-summing the series into a closed form and addressing related dimensional regularization issues.
This paper argues that near the surface of an Exotic Compact Object, the vacuum Einstein equations induce chaotic metric oscillations analogous to cosmic billiards, where sign-changing potential walls cause compact directions to collapse into zero size, naturally transitioning the geometry into the interior of string theory fuzzballs.