Entanglement spectrum and entropy in non-Hermitian systems
ORAL
Abstract
In this talk, we study both the entanglement spectrum and the entanglement entropy by use of a biothogonal basis in non-Hermitian free fermion systems. We show the entanglement spectrum can characterize topological features in the non-Hermitian Su-Schrieffer-Heeger model with parity and time reversal symmetry. In addition, we find the entanglement entropy at the critical point of this model has a logarithmic scaling with corresponding central charge c=-2, which can be described by the non-unitary conformal field theory.
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Presenters
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Po-Yao Chang
National Tsing Hua University Taiwan, Department of Physics, National Tsing Hua University
Authors
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Po-Yao Chang
National Tsing Hua University Taiwan, Department of Physics, National Tsing Hua University
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Jhih-Shih You
IFW Dresden
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Xueda Wen
Massachusetts Institute of Technology, Department of Physics, Massachusetts Institute of Technology
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Shinsei Ryu
University of Chicago