3784 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 three rapid boundary identification methods (AMPS, FLARE, and CRISP) paired with adaptive subtraction techniques to precisely define the extent of gravitational-wave glitches, significantly improving signal recovery and reducing false alarms compared to existing padded-window approaches.
This paper investigates the conditions under which long-range interactions mediated by massless particles preserve a hidden Laplace-Runge-Lenz vector, finding that while classical orbital precession is absent in many models, quantum mechanical hydrogen-like degeneracy is uniquely preserved in supergravity through a specific cancellation between gravitons and six Majorana gravitinos.
This paper investigates the late-time accelerated expansion of the Universe within a power-law gravity framework employing a logarithmic dark energy equation of state, demonstrating through Markov Chain Monte Carlo analysis of recent cosmological data that this model offers a valid and more flexible alternative to the standard CDM model with richer phenomenology at low redshifts.
This paper investigates the Einstein scalar field equations with a nonzero cosmological constant under Bondi-Sachs metrics, establishing asymptotic expansions dependent on four additional functions, proving the peeling property under specific conditions, and deriving a Bondi energy-momentum loss formula relevant to gravitational wave data.
This paper proposes a hybrid framework in Hu-Sawicki gravity where hierarchical primordial black hole mergers, accelerated by a screened fifth force, create massive seeds that efficiently grow into the supermassive black holes observed as Little Red Dots by JWST, thereby resolving high-redshift timing challenges while remaining consistent with gravitational wave constraints.
This paper establishes that on compact sections of supersymmetric near-horizon geometries, a pointwise identity linking the warp factor, rotation one-form, and spinor norms yields a single-point rigidity theorem, an algebraic characterization of the flux via a degenerate $Spin(7)$ perfect square, and global constraints that bound the deviation from staticity and flux mismatch against a single supersymmetry constant.
This paper systematically investigates the correspondences among black hole shadows, quasinormal modes, and graybody factors for regular black holes in five-dimensional quasi-topological gravity, demonstrating that applying the Langer correction significantly improves the accuracy of these relationships to enable multi-messenger tests of gravity.
This paper investigates the algebraic and differential structure of the Riemann tensor in higher-dimensional Kerr-NUT-(A)dS spaces to pursue an IDEAL characterization of these metrics, proving a no-go theorem that no non-trivial 2-form can be covariantly constructed from the undifferentiated Riemann tensor alone while successfully characterizing the family of valid curvature tensors through specific algebraic and differential conditions derived from the principal tensor's integrability and the Bianchi identity.
This paper derives a 2D effective action for semi-classical AdS gravity with an EOW brane by solving the radial Hamiltonian flow, identifies it with a -like deformed CFT to propose a holographic dual, and successfully applies this framework to calculate island rules in non-asymptotic regimes with exact agreement to Ryu-Takayanagi results.
This paper provides a geometric proof demonstrating that the enhanced symmetry of extremal horizons arises from a specific foliation by non-expanding horizons, a property guaranteed in any spacetime satisfying the null convergence condition.