Finite Ising chains with quadratic transverse fields exhibit periodic oscillations from a constant shift lifting topological degeneracy in thermal states.
Asb´ oth, L´ aszl´ o Oroszl´ any, and Andr´ as P´ alyi,A Short Course on Topological Insulators (Springer International Publishing, 2016)
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Periodic dynamics in an Ising chain with a quadratic transverse field
Finite Ising chains with quadratic transverse fields exhibit periodic oscillations from a constant shift lifting topological degeneracy in thermal states.