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arXiv · 1803.08627

Holographic complexity of the disk subregion in (2+1)-dimensional gapped systems

Lin-Peng Du·Shao-Feng Wu·Hua-Bi Zeng
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Abstract

Using the volume of the space enclosed by the Ryu-Takayanagi (RT) surface, we study the complexity of the disk-shape subregion (with radius R) in various (2+1)-dimensional gapped systems with gravity dual. These systems include a class of toy models with singular IR and the bottom-up models for quantum chromodynamics and fractional quantum Hall effects. Two main results are: i) in the large-R expansion of the complexity, the R-linear term is always absent, similar to the absence of topological entanglement entropy; ii) when the entanglement entropy exhibits the classic `swallowtail' phase transition, the complexity is sensitive but reacts differently.

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Lin-Peng Du, Shao-Feng Wu, Hua-Bi Zeng. 2018-09-05. Holographic complexity of the disk subregion in (2+1)-dimensional gapped systems. https://doi.org/10.1103/physrevd.98.066005

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