2593 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 computes the vacuum expectation value of the stress-energy tensor for a scalar field on a product spacetime consisting of an FLRW background and a time-dependent compact dimension by modifying the adiabatic regularization prescription to derive analytic expressions that recover known Casimir and FLRW results in specific limits.
This paper presents an optimized and significantly faster version of a higher-order WKB Mathematica code for computing quasinormal modes and greybody factors, which achieves substantial speed gains by expanding the effective potential in a Taylor series around its maximum rather than evaluating the full analytic WKB formula for each specific potential.
This paper establishes a fully relativistic framework for slowly rotating two-fluid neutron stars that reveals intrinsic collective rotational eigenmodes and demonstrates that the preservation or breakdown of rotational-tidal universality depends on dark-sector microphysics rather than simply the presence of an additional gravitationally coupled component.
This paper investigates the thermodynamic geometry and phase transitions of Anti-de Sitter black holes in ModMax, nonlinear electrodynamics, and Euler-Heisenberg theories under standard, Rényi, and Kaniadakis entropy frameworks, demonstrating that singularities in the geometrothermodynamic curvature consistently identify critical points that are preserved in their holographic dual conformal field theories.
This paper investigates the thermodynamic properties, stability, and null-geodesic structure of a Kerr-Newman black hole surrounded by quintessence and a cloud of strings, specifically analyzing how these features are modified by the inclusion of a modified dispersion relation (MDR).
This paper investigates the quantum gravity effects on particle tunneling and the thermodynamic properties of a Kerr-Newman black hole surrounded by quintessence by applying the Generalized Uncertainty Principle and gravity's rainbow framework to derive corrected Hawking temperatures, heat capacity, entropy, and equation of state parameters.
This paper re-evaluates the viability of Minimal Warm Inflation driven by an axion-like inflaton coupled to non-Abelian gauge bosons, concluding that while the clockwork mechanism fails to generate the necessary hierarchy between decay constants, effective descriptions satisfying partial-wave unitarity bounds remain consistent with observational constraints.
This paper constructs a perturbative renormalization group improved black hole solution and investigates its quasinormal modes under scalar field perturbations in both Schwarzschild-de Sitter and Schwarzschild-anti-de Sitter backgrounds, employing multiple numerical methods to demonstrate consistent results and successful waveform reconstruction.
This paper forecasts that a three-band gravitational-wave network combining Taiji, the Lunar Gravitational-wave Antenna, and the Einstein Telescope will significantly outperform two-detector configurations in constraining cosmological parameters, achieving sub-percent precision on the Hubble constant and competitive constraints on dark energy through the observation of intermediate-mass black hole binaries.
This paper establishes that in specific modified gravity theories characterized by a parameter , all vacuum Bianchi type IX solutions converge to a Mixmaster attractor composed of Bianchi type I and II states, thereby proving an analogue of Ringström's theorem and demonstrating that, unlike in general relativity, no solutions converge to locally rotationally symmetric states.