3875 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 introduces a designer method within Horndeski's scalar-tensor theory to construct specific subclasses that support ghost-free and Laplace-stable cosmological solutions for both exponential and power-law acceleration of the Universe.
This paper proposes a five-dimensional braneworld model where hidden-sector matter accretion onto a common black-string horizon drives the growth of supermassive black hole seeds on our brane, offering a solution to the high-redshift black hole problem without requiring primordial fossils or super-Eddington accretion.
This paper systematically analyzes how ultralight dark matter induces distinctive signals in space-based laser interferometers like LISA and Taiji, demonstrating that while laser-frequency variations are suppressed by standard data processing, test-mass oscillations remain detectable and offer significantly improved sensitivity to electron couplings compared to traditional Michelson channels.
This paper demonstrates that an observer falling along the polar axis of a Kerr black hole can survive tidal forces without disruption if the black hole's mass exceeds a spin-dependent critical value, a condition met by supermassive black holes but not by stellar-mass rotating ones.
This essay reframes proposed tabletop tests of gravity's quantum nature as "quantum-gravitational imitation games," demonstrating how gravitational interactions between mechanical oscillators can facilitate quantum state teleportation to enable fundamental empirical probes of gravity.
This paper demonstrates that the critical gravitational collapse of a self-interacting scalar field in asymptotically anti-de Sitter spacetime exhibits type II behavior with universal echoing periods and critical exponents that remain invariant across different AdS curvature radii, confirming that the specific form of the scalar field potential does not significantly alter the critical collapse dynamics.
This paper extends the Hybrid Effective Field Theory (HEFT) framework to modified gravity cosmologies, specifically gravity, by detailing the perturbative biased expansion required to compute loop-corrected power spectra and proposing a strategy to adapt existing CDM emulators for these beyond-standard-model scenarios.
This paper provides a proof of Robert Bartnik's 1988 cosmological splitting conjecture by combining global viscosity solutions to the Lorentzian eikonal equation with an elliptic approach utilizing the -d'Alembertian operator for .
This paper proposes a framework where spatial subregions in quantum gravity are assigned pure states via a partially frozen gravitational path integral, leading to a new holographic prescription for entanglement entropy that satisfies key consistency conditions and introduces an observer-dependent entanglement wedge.
This paper establishes a universal "Weyl double copy" relation for all four-dimensional type D vacuum spacetimes, linking their gravitational curvature to electromagnetic field strengths and resolving ambiguities in previous Kerr-Schild formulations while providing new double-copy interpretations for the C-metric and Eguchi-Hanson instanton.