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 how particle spin and Lorentz symmetry breaking in Bumblebee gravity jointly modulate chaos bound violations in black hole spacetimes, revealing that spin lowers the critical angular momentum for violations while Lorentz violation suppresses the accessible parameter space and a negative cosmological constant enhances violation magnitude.
This paper argues that dimensional analysis is fundamentally a gauge theory, demonstrating how this perspective unifies quantity calculus, Stevens's scales of measurement, and the Buckingham-Π theorem through the mathematical frameworks of Lie groups, representation theory, and invariant theory.
This paper resolves the Third-Particle Paradox by demonstrating that inconsistencies in subsystem descriptions across Quantum Reference Frames arise from comparing inequivalent physical layers, and it introduces the Perspective Relational Trace to characterize exactly which states maintain statistical consistency within Perspective-Neutral and Quantum-Information frameworks.
This paper investigates the thermodynamic, dynamical, and topological properties of static, spherically symmetric black holes in Einstein-Maxwell theory with a non-minimal logarithmic coupling, revealing how scale-dependent corrections influence Hawking temperature, quasinormal modes, geodesic structures, and global phase stability through a topological analysis of Barrow entropy.
This paper introduces and derives the unit Killing initial data (uKID) equations, a system of differential equations on an initial data surface that uniquely characterizes unit-normalized Killing vector fields in Einstein -vacuum spacetimes by eliminating the scaling degree of freedom found in classical KID equations.
This paper investigates static, spherically symmetric black holes in Einstein-Euler-Heisenberg theory by working directly with the physical electromagnetic invariant to derive exact electric, magnetic, and numerical dyonic solutions, revealing that nonlinear interactions induce novel multi-horizon structures and modified thermodynamics while leaving the central singularity unresolved.
This paper demonstrates that incorporating Loop Quantum Cosmology inverse volume corrections can shift the theoretical predictions of fractional power law inflation models, rescuing classically disfavored potentials by aligning their scalar spectral index and tensor-to-scalar ratio with current high-precision observational constraints from ACT, Planck, DESI, and BICEP/Keck.
This paper constructs and analyzes stationary, axisymmetric vacuum metrics derived from the magnetic Ernst inversion of Kerr-NUT spacetimes with a Manko-Ruiz parameter, detailing how the transformation influences axis regularity, curvature singularities, and azimuthal closed timelike curves while preserving key geometric invariants.
This paper proposes a feasible optical experiment that links time travel to lasing, suggesting that amplified vacuum fluctuations above the laser threshold can test Hawking's Chronology Protection Conjecture by establishing the quantum limits of time travel.
This study derives charged black hole solutions in Einstein- gravity with a Letelier--Alencar cloud of strings and cosmological constant, analyzes their thermodynamic stability, and constrains the model's parameters using Bayesian MCMC analysis of quasi-periodic oscillation data from black holes of various masses.