55 citations · 144 across the 5 of their papers we have counts for
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cond-mat.str-el2009★ 55 cited
Multicriticality and entanglement in the one-dimensional quantum compass model
Erik Eriksson, Henrik Johannesson
We study the one-dimensional (1D) quantum compass model with two independent parameters by means of an exact mapping to the quantum Ising model. This allows us to uncover hidden fe…
cond-mat.str-el2009★ 42 cited
Reduced fidelity in topological quantum phase transitions
Erik Eriksson, Henrik Johannesson
We study the reduced fidelity between local states of lattice systems exhibiting topological order. By exploiting mappings to spin models with classical order, we are able to analy…