3949 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 demonstrates that in Doubly Special Relativity, both local modified dispersion relations and rainbow-metric approaches yield a universal near-horizon black-hole temperature scaling determined solely by the ratio of deformation functions , with corrections becoming significant only in the Planck regime.
This paper proposes a covariant Hamiltonian quantization framework for teleparallel equivalents of general relativity that utilizes non-singular field-strength Hamiltonians to avoid the frozen formalism of canonical general relativity, introducing a Tomonaga-Schwinger-type evolution equation without a preferred time coordinate as a new approach to nonperturbative quantum gravity.
This paper reformulates stellar structure equations as a dynamical system to demonstrate that the maximum mass of stellar sequences corresponds to a fixed point in the relativistic regime, a framework that explains equation-of-state-insensitive relations and suggests that the pulsar J0740+6620 likely lies near this maximum only if a strong first-order phase transition occurs just above its central density.
This paper numerically investigates the memory effect of test particles interacting with pp-wave Gaussian pulses for non-standard polarization modes, revealing that the relative kinetic energy variation exhibits a quartic dependence on wave amplitude determined by the wave's multipolar structure and integrated tidal field.
This paper demonstrates that a minimally modified gravity theory exhibiting VCDM-like behavior successfully reproduces the observed late-time cosmic acceleration and outperforms the standard CDM model when constrained by a comprehensive combination of cosmological datasets.
This study demonstrates that in Bianchi type-I quantum cosmology, the choice of wave packet structure critically determines both singularity resolution and quantum relaxation dynamics, where Lorentzian wavepackets generate stronger quantum potentials and more complex velocity fields that facilitate non-singular bounces and more effective relaxation toward Born-rule equilibrium compared to Gaussian superpositions.
Using two model-independent methods and recent observational data from Type Ia supernovae, baryon acoustic oscillations, cosmic chronometers, and gamma-ray bursts, this study confirms the validity of the cosmic distance duality relation within a 1σ confidence level, finding no evidence for its violation.
This paper proposes a -deformed Wheeler--DeWitt framework for Schwarzschild black and white holes that yields a finite-dimensional Hilbert space and bounded entropy, thereby resolving evaporation divergences through a stable cold remnant and establishing a consistent semiclassical link between quantum gravity and cosmology.
This paper demonstrates that while a specific exponential deformation of the Starobinsky model cannot support a positive-curvature vacuum bounce on its own, a minimal extension with an added constant term successfully realizes a stable, nonsingular cosmological bounce free of ghost and tachyonic instabilities, with well-behaved scalar and tensor perturbations in the Einstein frame.
This paper presents a closed-form analytic model of a flat-spacetime accelerating boundary that mimics Hawking-type emission with infinite asymptotic acceleration yet finite total radiated energy, unifying the study of scattering symmetry, horizon formation, and the distinction between local energy flux and global particle production to reveal a hybrid of normal and extremal black hole properties.