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 clarifies that while both local Rindler horizon and cosmological apparent horizon approaches in modified gravity utilize non-equilibrium thermodynamic relations, the origin, role, and dynamical impact of their respective entropy-production terms are fundamentally distinct, underscoring the non-uniqueness of thermodynamic descriptions in theories beyond general relativity.
This paper constructs explicit planar Anti-de Sitter spacetimes with multiple NUT parameters by introducing axionic scalar fields or quadratic-curvature corrections, thereby overcoming vacuum field equation restrictions and enabling the study of holographic properties with multiple NUT charges alongside Kaluza-Klein multi-monopole configurations.
This paper proposes a novel experimental setup where a charged Weber bar inside a shielded cavity interacts with gravitational waves via a semi-classical analogue of the Gertsenshtein effect, causing the bar to emit detectable photons as a means of gravitational wave detection.
This paper confirms that non-supersymmetric extremal black holes in N=8 string theory lack a sizeable ground state degeneracy by demonstrating that their D-brane description yields a unique ground state with non-zero energy, thereby implying the absence of truly extremal states.
This paper demonstrates that in axion monodromy inflation, oscillatory modulations of the potential continuously excite heavy moduli fields, thereby invalidating the conventional single-field approximation and generating detectable cosmological collider signals in the primordial bispectrum that bypass standard Boltzmann suppression.
This paper proposes a novel framework where a spontaneously broken global symmetry generates a residual symmetry that stabilizes dark matter while suppressing proton decay to the one-loop level, thereby linking the proton lifetime to dark matter mass and predicting distinctive TeV-scale leptoquark signatures accessible to current and future experiments.
This paper investigates a cosmological model where a Gauss-Bonnet-coupled scalar field (dark energy) interacts with fermionic dark matter, demonstrating that both exponential and power-law potentials yield expansion histories consistent with current observational data and the standard CDM model while allowing for testable deviations in gravitational wave propagation.
This study extends recent findings on the long-term stability of spherically symmetric ultracompact boson stars by decomposing simulation data into spherical harmonics to initiate the characterization of their non-spherical angular modes.
This paper challenges the conventional view that black holes must contain singularities or Cauchy horizons by demonstrating that a charged, evaporating black hole can remain non-singular due to electromagnetic repulsion and Hawking radiation-induced energy condition violations, a mechanism the authors suggest may also apply to rotating astrophysical black holes.
This paper proposes that pulsar polarimetry, when cross-correlated with timing data, can detect parity-violating circular polarization in nanohertz stochastic gravitational wave backgrounds by inducing a measurable rotation in pulsar polarization signals that shares the characteristic Hellings-Downs angular pattern.