Abstract
Using the matrix product formalism, we find exact ground states for two new spin-(1/2) and spin-(3/2) quantum chains. On a lattice of 3N sites, these ground states have a total spin of N/2, and hence have ferrimagnetic character. The novel point of this construction is that we construct a matrix product representation, not for a state which is invariant under rotation as has been hitherto considered, but for a state which transforms to other states under this symmetry operation. The method can be directly generalized to other symmetry groups.
Original language | English |
---|---|
Article number | 67006 |
Journal | EPL |
Volume | 84 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1 Dec 2008 |
MoE publication type | A1 Journal article-refereed |