Physics – Quantum Physics
Scientific paper
2009-12-02
Phys. Rev. A 81, 062335 (2010)
Physics
Quantum Physics
6 pages, 2 figures
Scientific paper
10.1103/PhysRevA.81.062335
Many-body states whose wave-function admits a representation in terms of a uniform binary-tree tensor decomposition are shown to obey to power-law two-body correlations functions. Any such state can be associated with the ground state of a translational invariant Hamiltonian which, depending on the dimension of the systems sites, involve at most couplings between third-neighboring sites. A detailed analysis of their spectra shows that they admit an exponentially large ground space.
Cirac Juan Ignacio
Fazio Rosario
Giovannetti Vittorio
Montangero Simone
Rizzi Matteo
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