3256 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 the cosmological constant arises geometrically from the compactification of five-dimensional Einstein-Chern-Simons gravity, where a large extra dimension naturally yields the observed value without fine-tuning in the strong-field regime while preserving standard General Relativity solutions.
By analyzing gravitational-wave emission from particles plunging into Schwarzschild black holes, this paper demonstrates that observable deviations from General Relativity in quadratic gravity are exponentially suppressed in the GR limit, thereby providing a nonperturbative realization of the theory's equivalence to General Relativity despite its distinct non-perturbative features.
This paper extends a Weyl-coupled gravity model, previously validated with constant density assumptions, to realistic radially varying density profiles to explain the rotation curves of the Milky Way, M31, and seven local edge-on spiral galaxies without invoking non-baryonic dark matter.
This paper presents a comprehensive simulation of primordial black hole (PBH) cluster evolution using the Smoluchowski coagulation equation and Monte Carlo methods to model merger dynamics with and without mass segregation, thereby determining runaway timescales and mass population evolution to explain high-redshift supermassive black holes observed by JWST.
This paper applies the Multipolar Post-Minkowskian formalism to compute the gravitational waveform, energy, and linear momentum emissions for a two-body system in radial fall up to the 2.5 Post-Newtonian order, while also evaluating inertial force contributions at the 4.5PN level to facilitate future high-precision calculations.
This study uses redshift-space distortion measurements combined with background cosmological data to constrain the Generalized Uncertainty Principle's deformation parameter , revealing a systematically negative value that allows for a weak-to-strong observational preference for the modified model over standard CDM depending on the specific supernova dataset used.
This paper proposes that the near-singularity geometry of scalarized AdS black holes, specifically the behavior of the Kasner exponent , serves as a novel and independent diagnostic tool for identifying first-order phase transitions and supercritical crossovers, revealing that macroscopic thermodynamic changes fundamentally reshape the deepest interior structure of spacetime.
This paper presents an unsupervised adaptive network coherence analysis framework that effectively mitigates non-Gaussian spectral artifacts in continuous gravitational-wave searches using Advanced LIGO O3 data, significantly reducing spectral lines while preserving astrophysical signal integrity and detector sensitivity.
This paper demonstrates that GPBilby, a parameter estimation tool utilizing Gaussian processes to jointly model astrophysical signals and non-Gaussian noise, effectively mitigates the biases caused by transient glitches in gravitational-wave data while simultaneously revealing the intrinsic coupling between waveform systematics and flexible noise modeling through case studies of specific events like GW231123, GW191109, and GW230630_070659.
This paper establishes a consistent first-order formalism for General Relativity at spatial infinity using the Holst action, demonstrating that relaxed boundary conditions and specific parity constraints allow for the full BMS group including supertranslations while proving that the Immirzi parameter modifies Lorentz charges but leaves supertranslation charges invariant.