2615 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 presents the first analytic solutions for nearly equatorial, plunging orbits of spinning test particles in Kerr spacetime, providing closed-form corrections to the innermost bound circular orbit and a novel parametrization to aid in modeling gravitational waveforms.
This paper reports the results of a directed search for continuous gravitational waves from unknown neutron stars in five Milky Way globular clusters using LIGO-Virgo-KAGRA data from the first eight months of the fourth observing run, finding no detections but setting the most sensitive upper limits to date across most of the explored parameter space.
This paper presents a loop quantization of the marginally bound Lemaître-Tolman-Bondi dust model, demonstrating that the classical central singularity is resolved by a quantum bounce at Planckian densities, while also revealing that interference patterns in the wave function near the bounce limit the accuracy of effective loop quantum gravity theories compared to the full quantum dynamics.
This paper evaluates the observational viability and thermodynamic implications of Gong-Zhang dark energy parametrizations using late-time cosmological data, finding that the GZ-Type II model offers a competitive, physically transparent alternative to CDM with reduced parameter degeneracy and is further validated by configuration entropy analysis as a diagnostic of late-time cosmic acceleration.
This study investigates how external magnetic fields around massive black holes imprint specific post-Newtonian corrections on gravitational waveforms during inspiral, demonstrating that while these magnetic effects are distinct from modified gravity theories, they are observationally degenerate with the gravitational influence of surrounding matter distributions.
This paper proposes that including third-order gravitational waves within the scalar-induced gravitational wave framework can enhance the spectral amplitude of the PTA signal, thereby alleviating the theoretical tension of primordial black hole overproduction while maintaining consistency with cosmological constraints and supermassive black hole binary backgrounds.
This paper employs Lie Symmetry Analysis and Noether Point Symmetry methods to derive the symmetry generators and conserved quantities of the Einstein vacuum field equations, thereby offering a novel reformulation of Birkhoff's Theorem.
This paper demonstrates that future space-based gravitational wave detectors like LISA can use extreme mass-ratio inspirals involving braneworld black holes with tidal charges to place significantly stronger constraints on extra dimensions than current black hole shadow or ground-based observations.
This paper investigates the relationship between non-local magic and entanglement in quantum many-body systems, establishing bounds on classical simulation hardness and conjecturing a linear scaling in conformal field theories, while proving that in holographic duals, non-local magic vanishes precisely when gravitational back-reaction is absent and is approximately equal to the rate of change of minimal surface area with respect to cosmic brane tension.
This paper investigates the cosmological viability of a specific gravity model by constraining its parameters using MCMC simulations on combined observational Hubble, supernova, and large-scale structure datasets, ultimately comparing its ability to explain late-time accelerated expansion and cosmic structure growth against the standard CDM model.