2693 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 analytically demonstrates that the temporal correlations arising from photon-graviton conversion in a magnetic field violate the Leggett-Garg inequality, thereby offering a novel method to probe the quantum nature of gravity.
This paper investigates how inclined external magnetic fields interact with a black hole's internal Blandford-Znajek field to suppress horizon magnetic flux and modulate particle acceleration, revealing that while axisymmetric fields can completely quench jets, inclined configurations allow for persistent outflows with escape fractions maximized at non-zero angles, offering a mechanism for jet suppression in systems like Sgr A*.
This paper investigates how the expansion of a Friedmann-Robertson-Walker universe, specifically in power-law and de Sitter scenarios, affects the fidelity of quantum teleportation between comoving observers by analyzing the degradation of quantum correlations through field-theoretical methods and Bogoliubov transformations.
This paper proposes a perturbatively renormalizable Quantum GraviElectro Dynamics (QGED) framework based on BRST quantization, demonstrating that gravitational coupling can be experimentally measured and calculated at the one-loop order, thereby distinguishing it from non-renormalizable quantum general relativity.
This paper investigates the Carrollian limit of four-dimensional quadratic gravity, identifying four non-equivalent theories that modify the Carrollian limit of general relativity with extrinsic curvature terms, classifying them by their tachyon-free properties and equivalence to specific gravitational models at leading and next-to-leading orders.
This paper proposes a Schrödinger equation incorporating explicit Bogoliubov transformations to describe the unitary evolution of a linear Klein-Gordon field on a Hilbert bundle over curved spacetime, demonstrating that such dynamics are unitary provided a specific tensor on the canonical phase space satisfies the Hilbert-Schmidt condition.
This paper establishes the equivalence of various methods for deriving Galilean and Carrollian gravitational limits, enabling the construction of a generic algorithm to expand any finite-order metric theory of gravity into these non-Lorentzian regimes and identifying the conditions under which such theories simultaneously modify General Relativity in both limits.
This paper establishes a nonlinear -gluing theorem for vacuum gravitational fields with a cosmological constant near Birmingham-Kottler backgrounds in dimensions, extending previous results to arbitrary finite differentiability.
This paper proposes a novel mechanism for primordial black hole formation where an interrupted first-order phase transition during the reheating era creates macroscopic density perturbations that collapse into black holes as the universe transitions from matter to radiation domination.
This paper develops a method to construct a one-parameter family of globally-defined Love symmetry generators for rotating black holes in arbitrary dimensions by matching the near-horizon Klein-Gordon operator to an Casimir, a framework that successfully recovers known 4D and 5D cases and demonstrates the separability of the massive scalar wave equation in generalized Lense-Thirring spacetimes using both Myers-Perry and Painlevé-Gullstrand coordinates.