Dynamical topological invariant for non-Hermitian Rice-Mele model

26 Apr 2018 Wang R. Zhang X. Z. Song Z.

We study a non-Hermitian Rice-Mele model without breaking time-reversal symmetry, with the non-Hermiticity arising from imbalanced hopping rates. The Berry connection, Berry curvature and Chern number are introduced in the context of biorthonormal inner product... (read more)

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