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arXiv · 2012.07672

Nonadiabatic Phase Transition with Broken Chiral Symmetry

Bin Yan·Vladimir Y. Chernyak·Wojciech H. Zurek·Nikolai A. Sinitsyn
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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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Bin Yan, Vladimir Y. Chernyak, Wojciech H. Zurek, Nikolai A. Sinitsyn. 2020-12-14. Nonadiabatic Phase Transition with Broken Chiral Symmetry. https://doi.org/10.1103/physrevlett.126.070602

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