학술논문
Nonadiabatic Phase Transition with Broken Chiral Symmetry
Document Type
Working Paper
Source
Phys. Rev. Lett. 126, 070602 (2021)
Subject
Language
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.
Comment: v2: published version. 5+5 pages, 3+1 figures
Comment: v2: published version. 5+5 pages, 3+1 figures