Interior Structure and Complexity Growth Rate of Holographic Superconductor from M-Theory

TL;DR

This paper investigates the interior structure and complexity growth of a top-down holographic superconductor from M-theory, revealing intricate dynamics, singularity formation, and a discontinuous complexity growth rate at the phase transition.

Contribution

It provides an analytical description of interior dynamics, Kasner epoch transformations, and complexity behavior in a top-down holographic superconductor from M-theory.

Findings

Inner spacetime ends at a spacelike singularity after scalar hair condensation.

Chaotic Kasner epoch alternations occur near the singularity.

Complexity growth rate exhibits a discontinuity at the superconducting transition.

Abstract

We study the interior dynamics of a top-down holographic superconductor from M-theory. The condense of the charged scalar hair necessarily removes the inner Cauchy horizon and the spacetime ends at a spacelike singularity. Although there is a smooth superconducting phase transition at the critical temperature, the onset of superconductivity is accompanied by intricate interior dynamics, including the collapse of the Einstein-Rosen bridge, the Josephson oscillations of the condensate, and the final Kasner singularity. We obtain analytically the transformation rule for the alternation of different Kasner epochs. Thanks to the nonlinear couplings of the top-down theory, there is generically a never-ending chaotic alternation of Kasner epochs towards the singularity. We compute the holographic complexity using both the complexity-action and the complexity-volume dualities. In contrast to the latter, the complexity growth rate from the complexity-action duality has a discontinuity at the critical temperature, characterizing the sudden change of the internal structure before and after the superconducting phase transition.