2532 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 presents the first 3D general-relativistic magnetohydrodynamic simulations demonstrating that an in situ accretion-disk dynamo can convert toroidal magnetic fields into coherent poloidal structures, thereby launching highly variable, wobbling relativistic jets with sufficient power to explain long gamma-ray bursts without requiring a pre-existing large-scale poloidal field.
This paper utilizes the quantum Boltzmann equation to derive a quantitative decoherence rate for fermions in spatial superpositions caused by graviton bremsstrahlung, thereby establishing a microscopic link between quantum field theory and gravitational collapse models like dissipative CSL.
This paper derives gravitational waveforms for charged compact binaries in Einstein-scalar-Maxwell theories, demonstrating how scalar and vector charges induce dipole radiation and phase modifications characterized by a single parameter , which is constrained by binary pulsar observations and applicable to black hole, neutron star, and exotic compact object systems.
The paper proposes a novel method to detect asteroid-mass Primordial Black Hole dark matter by observing a unique "gravitational spectral radio forest"—a symmetric splitting of the hydrogen 2P3/2 state into a 2 GHz bandwidth caused by tidal spacetime curvature in H II regions.
This paper investigates and compares the geodesic motion of test particles and the thermodynamic stability of Gaussian Black Holes in both Einstein and modified quadratic Ricci scalar gravities, concluding that while differences exist in both aspects, the modified gravity model aligns more closely with physical reality, particularly in its thermodynamic behavior.
This paper uses general-relativistic ray tracing to demonstrate that misaligned double-ring and double-torus configurations around a Schwarzschild black hole produce distinct observational signatures, including multi-peak spectral profiles and asymmetric flux distributions, which serve as diagnostic features for non-coplanar accretion structures.
The paper argues that while a finite-dimensional quantum model of de Sitter space is inherently ambiguous due to measurement limitations, a precise mathematical description of our universe might still be achievable if it can be embedded within a sequence of models converging to a unique superstring theory in asymptotically flat space.
This paper challenges the conventional reliability of Post-Newtonian effective theory in weak-field regimes by demonstrating that non-integrability and angular-momentum exchange in many-body systems can cause breakdowns in power counting, offering a new systematic framework for mass inference that may resolve the dark matter puzzle without invoking new particles.
This paper challenges the conventional wisdom that decelerated expansion precludes event horizons and accelerated expansion precludes particle horizons by demonstrating, through regular bouncing cosmological models, that the existence of these non-local horizons depends on the spacetime's complete past and future history rather than just its instantaneous expansion phase.
This paper derives a quantum Brownian motion master equation describing the decoherence of a particle's spatial superposition along stationary worldlines in the Minkowski vacuum, identifying two thermal-like contributions arising from the modified field spectrum observed by the particle and differential time dilation across its wavefunction, with specific rates evaluated for hyperbolic and uniform circular motion.