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 proposes that by resolving the inconsistency of point-particle singularities in General Relativity through spacetime surgery and deriving a covariant backreaction term, the resulting modification to local particle trajectories can naturally explain flat galaxy rotation curves without invoking dark matter.
This paper proposes a single-field slow-roll inflation model featuring a sudden potential step at the end of inflation, which allows standard models like chaotic and Starobinsky inflation to produce a scale-invariant primordial spectrum () consistent with early dark energy solutions to the Hubble tension.
This paper argues that causal reference frames and time-delocalized subsystems are coordinate parametrizations of a single perspective-neutral object, demonstrating that while standard no-go theorems restrict unitary perspective transformations that preserve time foliation, such transformations become possible by either reshuffling past/future notions or by extending the process with quantum reference frames to provide a shared spatiotemporal scaffold.
This paper proposes that black hole mass can be reinterpreted as a topological charge arising from "bubble spacetimes" in first-order gravity, where the boundary between degenerate and nondegenerate metric phases coincides with the photon sphere and is characterized by a universal topological number, while the event horizon remains topologically trivial.
This paper investigates a three-dimensional black hole surrounded by Maxwell-Higgs vortices within linear gravity, revealing a ring-like system with quantized magnetic flux where the Bekenstein-Hawking temperature remains constant regardless of gravity or vortex parameters, indicating thermodynamic stability and unique horizon-induced perturbations in the magnetic profile.
This paper demonstrates that a chiral spin-chain model can simulate a binary black hole system to achieve high-fidelity quantum teleportation of information across event horizons by leveraging Hawking radiation-induced entanglement and optimal scrambling, thereby providing an experimentally accessible condensed matter platform for probing high-energy black hole phenomena.
This paper proposes a microscopic model of black holes as non-Abelian anyon condensates forming a topologically ordered timelike shell, which resolves the information paradox by encoding quantum information in fusion channels, reproduces black hole thermodynamics including entropy corrections, and ensures a nonsingular spacetime geometry.
This paper highlights the potential of discovering radio pulsars orbiting Sagittarius A* to test fundamental physics, while addressing the challenge of mass perturbations in the Galactic center by developing a numerical timing model to accurately probe spacetime and dark matter.
This paper demonstrates that primordial black holes retaining electric charges from the early universe, particularly near-extremal ones, can significantly alter Hawking radiation evaporation limits and thus reshape constraints on their viability as dark matter candidates.
This study demonstrates that thermal deformations caused by anisotropic heat conduction in super-Eddington magnetized neutron stars with column accretion can generate detectable continuous gravitational waves, potentially making these systems a new class of sources for upcoming observatories like the Einstein Telescope and Cosmic Explorer.