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Exact solutions in interacting dimerized Kitaev topological superconductors: Topological charge-density-wave and Schr\"odinger-cat states. (arXiv:1707.03983v1 [cond-mat.str-el])
来源于:arXiv
It was recently shown that an interacting Kitaev topological superconductor
model is exactly solvable based on two step Jordan-Wigner transformations
together with one spin rotation. We generalize this model by including the
dimerization, which is also exactly solvable. In this extended model there are
two topological indices associated with the sublattice symmetry and the
particle-hole symmetry. We analytically determine the topological phase diagram
containing seven distinct topological phases. There are two tetra-critical
points, at which four distinct phases touch. It is intriguing that a
topological charge-density-wave state and a topological Schr\"odinger-cat state
emerge for strong interactions. We confirm various topological phases by
examining the presence of zero-energy edge states. 查看全文>>