Physics – Quantum Physics
Scientific paper
2007-12-12
Phys. Rev. B 77, 094416 (2008)
Physics
Quantum Physics
24 pages, references added, the version which appears in the journal
Scientific paper
10.1103/PhysRevB.77.094416
We introduce a simple representation for irreducible spherical tensor operators of the rotation group of arbitrary integer or half integer rank and use these tensor operators to construct matrix product states corresponding to all the variety of valence-bond states proposed in the Affleck-Kennedy-Lieb-Tasaki (AKLT) construction. These include the fully dimerized states of arbitrary spins, with uniform or alternating patterns of spins, which are ground states of Hamiltonians with nearest and next-nearest neighbor interactions, and the partially dimerized or AKLT/VBS (Valence Bond Solid) states, which are constructed from them by projection. The latter states are translation-invariant ground states of Hamiltonians with nearest-neighbor interactions.
Karimipour Vahid
Memarzadeh Laleh
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