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Fractional Klein-Gordon Equation on AdS$_{2+1}$

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arxiv 2201.10870 v1 pith:TUHLB23K submitted 2022-01-26 hep-th cond-mat.stat-mech

Pablo Basteiro , Janine Elfert , Johanna Erdmenger , Haye Hinrichsen This is my paper · ORCID
classification hep-thcond-mat.stat-mech
keywords fractionalequationklein-gordonpropagatorresultsspaceapplicationsbecause
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abstract

We propose a covariant definition of the fractional Klein-Gordon equation with long-range interactions independent of the metric of the underlying manifold. As an example we consider the fractional Klein-Gordon equation on AdS$_{2+1}$, computing the explicit kernel representation of the fractional Laplace-Beltrami operator as well as the two-point propagator of the fractional Klein-Gordon equation. Our results suggest that the propagator only exists if the mass is small compared to the inverse AdS radius, presumably because the AdS space expands faster with distance as a flat space of the same dimension. Our results are expected to be useful in particular for new applications of the AdS/CFT correspondence within statistical mechanics and quantum information.

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  1. Fractional entropy of the Brown-Kucha\v{r} dust in fractional anti-de Sitter quantum gravity

    gr-qc 2025-01 conditional novelty 5.0 of 10

    In flat AdS quantum cosmology with Brown-Kuchar dust, the fractional Wheeler-DeWitt equation yields mass and entropy spectra scaling as (n+1/2)^(alpha/2), with a fractal mass dimension D = 3 alpha / 2.

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