3826 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 gravitational wave memory effects in parabolic encounters using an effective field theory formalism, arguing that treating the parabolic case as a distinct idealized limit rather than a simple extrapolation of eccentric or hyperbolic scenarios reveals unique features in the zero frequency limit and challenges previous estimation methods.
This paper demonstrates that the "Paradox of the Third Particle" and the resulting relativity of subsystems are classical phenomena rather than uniquely quantum, leading to a no-go theorem proving that information-preserving frame transformations make it impossible to consistently partition the world into individual subsystems from the perspective of any reference frame.
This paper evaluates the prospects for coincidently detecting Quasi-Periodic Eruptions (QPEs) and their corresponding gravitational-wave signals from extreme mass ratio inspirals with LISA, concluding that while such multimessenger observations would offer transformative scientific benefits, current QPEs likely fall outside LISA's sensitivity band, necessitating future searches for shorter-period systems.
This paper presents a Hamiltonian analysis of the first-order Katanaev-Volovich model that isolates a static torsionful sector, identifies the model's Casimir as a global label and Hamiltonian parameter prior to gauge fixing, and demonstrates how torsion modifies the Killing temperature while preserving standard horizon entropy and a Casimir-normalized first law.
This paper presents a comprehensive relativistic framework for viscous accretion disks around rotating Hayward regular black holes embedded in a quintessence dark energy field, demonstrating that abandoning the Novikov-Thorne stress-free boundary condition reveals a viscosity-independent bolometric efficiency sensitive to the black hole's regularity and dark energy parameters, thereby offering a robust observational discriminator for future X-ray missions.
Using a Chebyshev spectral method, this study demonstrates that while Schwarzschild–anti-de Sitter black holes exhibit stable scalar quasinormal modes under standard Dirichlet boundary conditions, any generalized deformation of these boundary conditions induces an instability characterized by a mode with a positive imaginary part.
This paper investigates how spontaneous Lorentz symmetry breaking, characterized by a dimensionless parameter , influences scalar wave propagation, null geodesics, and thermodynamic properties—including heat engine efficiency—of four-dimensional asymptotically AdS black holes in bumblebee gravity.
This paper demonstrates that the Hanbury-Brown Twiss intensity correlations of photons in a quantized electromagnetic cavity are insensitive to the second-order coherence and super-Poissonian statistics of cosmic gravitons, rendering it impossible to infer the statistical properties of gravitons from photon measurements even in principle.
This paper formulates and numerically solves the massless scalar scattering problem on Kerr-Bertotti-Robinson black holes, revealing that superradiant amplification is governed by a double-gate mechanism and can be completely suppressed by a sufficiently strong external magnetic field due to the geometry's finite tortoise distance and conditional boundary prescriptions.
This paper analyzes gravity models using multiple cosmological datasets, finding that the best-fit parameter is consistent with the standard cosmological model where .