期刊
PHYSICAL REVIEW A
卷 81, 期 6, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.81.062335
关键词
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资金
- IP-EUROSQIP
- National Research Foundation
- Ministry of Education Singapore
- [FIRB-RBID08B3FM]
- [SFB/TRR 21]
Many-body states whose wave functions admit a representation in terms of a uniform binary-tree tensor decomposition are shown to obey power-law two-body correlation functions. Any such state can be associated with the ground state of a translationally invariant Hamiltonian which, depending on the dimension of the systems sites, involves at most couplings between third-neighboring sites. Under general conditions it is shown that they describe unfrustrated systems which admit an exponentially large degeneracy of the ground state.
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