Kasner geometries inside holographic superconductors
arXiv:2112.14177 · doi:10.1007/JHEP04(2022)135
Abstract
The recent study of holographic superconductors has shown the emergence of a Kasner universe behind the event horizon. This paper serves to add to the discussion by introducing two modifications to the holographic superconductor model: an axion field term and an Einstein-Maxwell-scalar (EMS) coupling term. We first discuss the effect the modification parameters have on the condensate then explore the black hole interior dynamics. Features previously identified in the interior are found in the model presented, including the collapse of the Einstein-Rosen bridge, Josephson oscillations and Kasner inversions/transitions. However, we find that by increasing the EMS coupling parameter, the collapse does not occur near the axion-Reissner-Nordström horizon and the oscillations are no longer present; the geometry entering into a Kasner regime after a large- collapse instead.
arXiv commentv2: 23 Pages, 16 Figures, minor typos corrected, Figure 2 corrected, references added, new axion model added. v1: 20 Pages, 13 Figures
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