We study the quench dynamics of the topological quantum phase transition inthe two-dimensional transverse Wen-plaquette model, which has a phasetransition from a Z2 topologically ordered to a spin-polarized state. Bymapping the Wen-plaquette model onto a one-dimensional quantum Ising model, wecalculate the expectation value of the plaquette operator Fi during a slowlyquenching process from a topologically ordered state. A logarithmic scaling lawof quench dynamics near the quantum phase transition is found, which isanalogous to the well-known static critical behavior of the specific heat inthe one-dimensional quantum Ising model.
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