2677 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 ultralight dark matter influences compact binary merger statistics through accretion and dynamical friction, demonstrating that significant deviations from baseline models occur at ambient densities exceeding GeV/cm³ and offering a pathway to constrain dark matter distributions using gravitational wave data from the GWTC-3 catalogue.
This study investigates electromagnetic and Dirac perturbations of the regular Frolov black hole using the WKB method with Padé averaging to determine quasinormal mode frequencies and grey-body factors, while also analyzing the Unruh-Verlinde temperature to quantify how quantum gravity corrections modify these properties compared to the classical Reissner-Nordström black hole.
This paper analyzes entanglement generation in the Schwinger effect for scalar and spinor QED, revealing that while thermal fluctuations suppress bosonic entanglement below a critical temperature, fermionic entanglement persists at finite temperatures and exhibits a non-monotonic dependence on the electric field with a distinct optimal strength.
This paper demonstrates that the ability to constrain the time evolution of dark energy is fundamentally limited by the integral nature of cosmological observables, which acts as an intrinsic low-pass filter that renders distance-based probes structurally blind to instantaneous changes in the equation of state, thereby restricting them to effectively measuring only a single dominant mode regardless of data precision.
The paper introduces **aurel**, an open-source Python package that streamlines both symbolic and numerical relativistic calculations by leveraging a flexible caching system and finite-difference methods to process data from analytical expressions or Numerical Relativity simulations.
This paper utilizes quasi-periodic oscillations from five X-ray binaries and the relativistic precession model to constrain the mass, spin, magnetic charge, and nonminimal coupling parameters of a rotating regular magnetic black hole, demonstrating that its characteristic precession frequencies are suppressed compared to the standard Kerr black hole.
This paper demonstrates that, contrary to the conventional belief that black hole gravity universally degrades quantum correlations, the maximal entanglement of a four-qubit cluster state for fermionic fields in Schwarzschild spacetime remains perfectly preserved and "frozen" regardless of increasing Hawking temperature.
This paper introduces two numerical methods to calculate exact Post-Newtonian parameters in Brans-Dicke and Entangled Relativity theories, revealing significant deviations from General Relativity for compact objects and demonstrating that the theory's testability critically depends on whether the matter Lagrangian is defined by energy density or the trace of the stress-energy tensor.
This paper demonstrates that incorporating radial pressure and a fully relativistic treatment of dark matter distributions is essential for accurately modeling the orbital dynamics, gravitational waveforms, and detection thresholds of extreme mass ratio inspirals, as these factors significantly alter results compared to traditional anisotropic fluid models.
This paper challenges the prevailing linear paradigm of black hole relaxation by revealing a new nonlinear regime where a "saddle-node ghost" traps excited remnants, creating a universal power-law delay that manifests as a distinctive quiescence-burst signature in gravitational waves.