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説明
We show that a quantum scar state, an atypical eigenstate breaking eigenstate thermalization hypothesis embedded in a many-body energy spectrum, can be constructed in flat band systems. The key idea of our construction is to make use of orthogonal compact localized states. We concretely discuss our construction scheme, taking a saw-tooth flat lattice system as an example, and numerically demonstrate the presence of a quantum scar state. Examples of higher-dimensional systems are also addressed. Our construction method of quantum scar has broad applications to various flat band systems.
5+2 pages, 3+4 figures
収録刊行物
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- Physical Review B
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Physical Review B 102 (24), 241115(R)-, 2020-12-23
American Physical Society (APS)
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キーワード
- Condensed Matter - Materials Science
- Statistical Mechanics (cond-mat.stat-mech)
- Strongly Correlated Electrons (cond-mat.str-el)
- Materials Science (cond-mat.mtrl-sci)
- FOS: Physical sciences
- Disordered Systems and Neural Networks (cond-mat.dis-nn)
- Condensed Matter - Disordered Systems and Neural Networks
- Condensed Matter - Strongly Correlated Electrons
- Quantum Gases (cond-mat.quant-gas)
- Condensed Matter - Quantum Gases
- Condensed Matter - Statistical Mechanics
詳細情報 詳細情報について
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- CRID
- 1360572092729263232
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- ISSN
- 24699969
- 24699950
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- 資料種別
- journal article
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- データソース種別
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- Crossref
- KAKEN
- OpenAIRE