Non-Bloch Band Theory of Non-Hermitian Systems
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- Yokomizo Kazuki
- 理化学研究所
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- Murakami Shuichi
- 東京工業大学理学院物理学系
Bibliographic Information
- Other Title
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- 非エルミート系におけるブロッホバンド理論
Abstract
<p>We establish a Bloch band theory in a non-Hermitian system which is a nonequilibrium system described by a non-Hermitian Hamiltonian. Under an open boundary condition, our Bloch band theory can determine the Brillouin zone for a complex Bloch wave number reproducing energy bands in the thermodynamic limit. This Brillouin zone is called the generalized Brillouin zone. The generalized Brillouin zone tells us various physics in a non-Hermitian system. As an example, we can show the bulk-edge correspondence between a topological invariant defined from the generalized Brillouin zone and existence of topological edge states.</p>
Journal
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- Butsuri
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Butsuri 77 (5), 293-297, 2022-05-05
The Physical Society of Japan
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Details 詳細情報について
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- CRID
- 1390292007982659712
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- ISSN
- 24238872
- 00290181
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- Text Lang
- ja
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- Data Source
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- JaLC
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- Abstract License Flag
- Disallowed