Acta Physica Sinica, Volume. 69, Issue 7, 077102-1(2020)

Gauge theory of strongly-correlated symmetric topological Phases

Peng Ye*
Author Affiliations
  • School of Physics, Sun Yat-sen University, Guangzhou 510275, China
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    In the presence of symmetry-protection, topological invariants of topological phases of matter in free fermion systems, e.g., topological band insulators, can be directly computed via the properties of band structure. Nevertheless, it is usually difficult to extract topological invariants in strongly-correlated topological phases of matter in which band structure is not well-defined. One typical example is the fractional quantum Hall effect whose low-energy physics is governed by Chern-Simons topological gauge theory and Hall conductivity plateaus involve extremely fruitful physics of strong correlation. In this article, we focus on intrinsic topological order (iTO), symmetry-protected topological phases (SPT), and symmetry-enriched topological phases (SET) in boson and spin systems. Through gauge field-theoretical approach, we review some research progress on these topological phases of matter from the aspects of projective construction, low-energy effective theory and topological response theory.

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    Peng Ye. Gauge theory of strongly-correlated symmetric topological Phases[J]. Acta Physica Sinica, 2020, 69(7): 077102-1

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    Paper Information

    Received: Feb. 10, 2020

    Accepted: --

    Published Online: Nov. 20, 2020

    The Author Email:

    DOI:10.7498/aps.69.20200197

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