Nonadiabatic Phase Transition with Broken Chiral Symmetry

• URL: http://arxiv.org/abs/2012.07672v2
• Date: Sun, 21 Feb 2021 16:41:19 GMT
• Title: Nonadiabatic Phase Transition with Broken Chiral Symmetry
• Authors: Bin Yan, Vladimir Y. Chernyak, Wojciech H. Zurek, Nikolai A. Sinitsyn
• Abstract summary: 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. We find that the excitations on one of the chain sub-lattices are suppressed in the nearly-adiabatic regime exponentially.
• Score: 2.8623040632930556
• License: http://creativecommons.org/licenses/by/4.0/
• 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.

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