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Higher-form Symmetries under Weak Measurement

Cornell Affiliated Author(s)

Author

Kaixiang Su
Nayan Myerson-Jain
Chong Wang
Chao-Ming Jian
Cenke Xu

Abstract

We aim to address the following question: if we start with a quantum state with a spontaneously broken higher-form symmetry, what is the fate of the system under weak local quantum measurements? We demonstrate that under certain conditions, a phase transition can be driven by weak measurements, which suppresses the spontaneous breaking of the 1-form symmetry and weakens the 1-form symmetry charge fluctuation. We analyze the nature of the transitions employing the tool of duality, and we demonstrate that some of the transitions driven by weak measurement enjoy a line of fixed points with self-duality.

Date Published

Journal

arXiv e-prints

Number of Pages

arXiv:2304.14433

DOI

10.48550/arXiv.2304.14433

Group (Lab)

Chao-Ming Jian Group

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