3285 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 establishes the standard conventions and best practices for data simulations, waveforms, and analysis pipelines within the LISA mission's Distributed Data Processing Centre, covering essential topics such as time-frequency transformations, source parametrization, instrumental response, time-delay interferometry, and reference frame definitions.
This paper presents the derivation of regular and stable black hole solutions within cubic Galileon dynamical dark energy theories, demonstrating how the resulting cosmological hair encodes cosmological information and offers a novel avenue for probing cosmic dynamics through black hole observations.
This paper argues that the observational preference for phantom-crossing dark energy arises from the specific ordering of matter density () tensions between CMB, BAO, and SN datasets, which phantom-crossing models uniquely resolve by aligning all values, whereas quintessence models fail to reconcile the BAO-CMB discrepancy.
This paper proposes that the collision of red giant helium cores, termed "erythrohenosis," triggers a helium detonation and hydrogen mixing that generates a unique multimessenger signature—including high-energy neutrinos, gravitational waves, and potential electromagnetic signals—capable of explaining the diffuse flux observed by IceCube and offering a detectable signal for nearby merger events.
This study reanalyzes neutron star-black hole mergers using the GWTC-4 catalog and the pyEFPE waveform model to establish the first joint constraints on mass, spin, and eccentricity, revealing that while most systems align with isolated evolution, GW200105 exhibits significant eccentricity indicative of a dynamical formation pathway.
This paper enhances the tidal sector of four effective-one-body (EOB) formalisms by incorporating next-to-next-to-leading post-Minkowskian order adiabatic and post-adiabatic quadrupolar tidal effects derived from scattering results, demonstrating improved agreement with numerical-relativity data for neutron star scattering and establishing a foundation for more accurate tidal models in both scattering and bound orbits.
This paper demonstrates the integrability of a generalized multivariable Painlevé-II equation with symmetry breaking, utilizing a Lax pair and the exact solution of the Demkov-Osherov model to derive connection formulas for asymptotic solutions and apply them to the precise scaling of excitations in unstable vacuum decay during second-order phase transitions.
This paper addresses the inherent phase ambiguity of spin-weighted spheroidal functions by defining and comparing two phase-fixing schemes, ultimately recommending the spherical-limit scheme as the standard default to ensure consistent extraction of physical information in black-hole perturbation theory.
This paper calculates the cosmological rates of primordial black holes tunneling into white holes and concludes that while such events could theoretically produce fast radio bursts, current observational constraints and the requirement for highly fine-tuned parameters strongly disfavor them as the dominant origin of the FRB population.
This paper presents a reconstruction procedure within scalar-tensor theory with nonminimal coupling in the Jordan frame that derives exact solutions for the potential, coupling function, and scalar field from a generic static spherically symmetric metric, demonstrating the method's validity through Reissner-Nordström-(Anti-)de Sitter and BBMB-(Anti-)de Sitter spacetime examples.