# Theoretical Physics

**19 July 2013**

**Time:**n/a

**Location:**

Sukhwinder Singh (Macquarie University, Australia)

Symmetry protected entanglement renormalization

We briefly describe how the classification [1] (based on the second group cohomology) of symmetry protected topological phases in one dimension can be reproduced from the viewpoint of renormalization group analysis by using "entanglement renormalization" [2]. [This part of the talk is based on the pre-print arXiv:1303.6716]

[1] Xie Chen, Zheng-Cheng Gu, Xiao-Gang Wen, arXiv:1103.3323

[2] G. Vidal, Phys. Rev. Lett. 99, 220405 (2007)

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