Exotic criticality in the dimerized spin-1 $XXZ$ chain with single-ion anisotropy

Satoshi Ejima, Tomoki Yamaguchi, Fabian H. L. Essler +3

We consider the dimerized spin-1 $XXZ$ chain with single-ion anisotropy $D$. In absence of an explicit dimerization there are three phases: a large-$D$, an antiferromagnetically or…