In the exactly solvable dimerized XY chain with staggered fields, the topological phase hosts a modulated string order with wavevector q=pi/2, while conventional magnetization vanishes at the phase boundary.
Watanabe, Phys
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String and conventional order parameters in the solvable modulated quantum chain
In the exactly solvable dimerized XY chain with staggered fields, the topological phase hosts a modulated string order with wavevector q=pi/2, while conventional magnetization vanishes at the phase boundary.