Nonadiabatic Phase Transition with Broken Chiral Symmetry
arXiv:2012.07672 · doi:10.1103/PhysRevLett.126.070602
Abstract
We explore nonadiabatic quantum phase transitions in an Ising spin chain with a linearly time-dependent transverse field and two different spins per unit cell. Such a spin system passes through critical points with gapless excitations, which support nonadiabatic transitions. Nevertheless, we find that the excitations on one of the chain sub-lattices are suppressed in the nearly-adiabatic regime exponentially. Thus, we reveal a coherent mechanism to induce exponentially large density separation for different quasiparticles.
arXiv commentv2: published version. 5+5 pages, 3+1 figures
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