Kibble-Zurek mechanism in quantum link model
arXiv:1910.01320 · doi:10.1103/PhysRevA.101.023610
Abstract
We study the driven critical dynamics of the quantum link model, whose Hamiltonian describes the one-dimensional lattice gauge theory. We find that combined topological defects emerge after the quench and they consist of both gauge field and matter field excitations. Furthermore, the ratio of gauge field and matter field excitation is due to the constraint of the Gauss' law. We show that the scaling of these combined topological defects satisfies the usual Kibble-Zurek mechanism. We verify that both the electric flux and the entanglement entropy satisfy the finite-time scaling theory in the whole driven process. Possible experimental realizations are discussed.
8.1 pages, 7 figures
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