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Universal Relation among the Many-Body Chern Number, Rotation Symmetry, and Filling
Akishi Matsugatani1, Yuri Ishiguro1, Ken Shiozaki2
1Department of Applied Physics, University of Tokyo, Tokyo 113-8656, Japan.
Abstract:
Understanding the interplay between the topological nature and the symmetry property of interacting systems has been a central matter of condensed matter physics in recent years. In this Letter, we establish nonperturbative constraints on the quantized Hall conductance of many-body systems with arbitrary interactions. Our results allow one to readily determine the many-body Chern number modulo a certain integer without performing any integrations, solely based on the rotation eigenvalues and the average particle density of the many-body ground state.
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