2010年12月
Holographic fractional topological insulators in 2+1 and 1+1 dimensions
PHYSICAL REVIEW D
- ,
- ,
- 巻
- 82
- 号
- 12
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevD.82.126003
- 出版者・発行元
- AMER PHYSICAL SOC
We give field theory descriptions of the time-reversal invariant quantum spin Hall insulator in 2 + 1 dimensions and the particle-hole symmetric insulator in 1 + 1 dimensions in terms of massive Dirac fermions. Integrating out the massive fermions we obtain a low-energy description in terms of a topological field theory, which is entirely determined by anomaly considerations. This description allows us to easily construct low-energy effective actions for the corresponding fractional topological insulators, potentially corresponding to new states of matter. We give a holographic realization of these fractional states in terms of a probe brane system, verifying that the expected topologically protected transport properties are robust even at strong coupling.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevD.82.126003
- ISSN : 1550-7998
- eISSN : 1550-2368
- Web of Science ID : WOS:000290316800010