3993 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 investigates how the thermal environment of the early Universe modifies the evaporation history of primordial black holes, thereby significantly altering the timing and spectral properties of the stochastic gravitational wave background they produce compared to standard vacuum evaporation models.
This paper numerically investigates the displacement memory effect induced by a wave pulse in regular black hole spacetimes, revealing that the resulting net displacement depends on the regularization parameter and pulse height, and differs significantly from that observed in singular black holes.
This study demonstrates that deviations from the standard primordial power spectrum can significantly enhance or suppress the detectability of non-trivial cosmic topologies in CMB temperature data, highlighting the critical need to account for primordial spectrum uncertainties in topology searches.
This paper investigates the dynamics and gravitational wave signatures of spinning particles in Deser-Woodard nonlocal gravity, demonstrating that specific nonlocal parameters significantly alter orbital stability and induce distinguishable phase shifts in gravitational waveforms compared to general relativity.
This paper investigates the dynamics of charged null dust collapse in spherical symmetry by establishing that any timelike curve can serve as a bounce hypersurface for such fluids and formulating a free boundary problem to describe the conditional formation of these surfaces within Reissner-Nordström spacetime.
This paper investigates the hydrodynamics of relativistic, charged, superheated bubbles in neutron star mergers, identifying unique pressure behaviors and metastable fluid regions distinct from supercooled bubbles while analyzing their impact on gravitational wave production efficiency.
This paper proposes a phenomenological framework using the Einstein-Langevin equation and a hollow mass-shell model to simulate gravitational wave generation as a stochastic Wiener process of graviton fluctuations, yielding a heuristic scaling relation and qualitative waveform resemblance to macroscopic observations.
This paper establishes the existence of constant mean curvature (CMC) Cauchy surfaces in future timelike geodesically complete, expanding cosmological spacetimes satisfying the strong energy condition by constructing barriers and analyzing the asymptotic limit of mean curvature flow, thereby resolving specific conjectures by the authors and by Dilts and Holst.
This paper establishes a covariant framework for semi-classical spin hydrodynamics in flat and curved spacetimes, demonstrating that spin and fluid modes decouple in the linear regime with damping governed solely by spin relaxation coefficients, while also highlighting the limitations of the Gibbs stability criterion due to equilibrium anisotropy and confirming similar relaxation dynamics in a conformal Bjorken flow background.
This paper presents model-independent measurements of dark energy density and equation of state using DESI DR2 and Planck 2015 data, finding consistency with a cosmological constant and suggesting that the previously reported 3.1 deviation by the DESI Collaboration may be an artifact of assuming a linear parametrization for the equation of state.