ABUNDANCE OF TRANSLATION INVARIANT PURE STATES ON QUANTUM SPIN CHAINS
Autor(en): | FANNES, M NACHTERGAELE, B WERNER, RF |
Stichwörter: | EXTENSION PROBLEM; Physics; Physics, Mathematical | Erscheinungsdatum: | 1992 | Herausgeber: | KLUWER ACADEMIC PUBL | Journal: | LETTERS IN MATHEMATICAL PHYSICS | Volumen: | 25 | Ausgabe: | 3 | Startseite: | 249 | Seitenende: | 258 | Zusammenfassung: | We construct a set of translation invariant pure states of a quantum spin chain, which is w*-dense in the set of all translation invariant states of the chain. Each of the approximating states has exponential decay of correlations, and is the unique ground state of a finite range Hamiltonian with a spectral gap above the ground state energy. |
ISSN: | 03779017 | DOI: | 10.1007/BF00406552 |
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