Distinct trivial phases protected by a point-group symmetry in quantum spin chains

The ground state of the S=1 antiferromagnetic Heisenberg chain belongs to the Haldane phase--a well-known example of the symmetry-protected topological phase. A staggered field applied to the S=1 antiferromagnetic chain breaks all the symmetries that protect the Haldane phase as a topological phase,...

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Veröffentlicht in:	Physical review letters 2015-05, Vol.114 (17), p.177204-177204, Article 177204
Hauptverfasser:	Fuji, Yohei, Pollmann, Frank, Oshikawa, Masaki
Format:	Artikel
Sprache:	eng
Schlagworte:	Antiferromagnetism Ground state Inversions Mathematical analysis Order parameters Phases Symmetry Topology
Online-Zugang:	Volltext
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