Nonadiabatic Phase Transition with Broken Chiral Symmetry
ORAL
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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Presenters
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Nikolai Sinitsyn
Los Alamos Natl Lab, Los Alamos National Laboratory
Authors
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Nikolai Sinitsyn
Los Alamos Natl Lab, Los Alamos National Laboratory
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Bin Yan
Los Alamos National Laboratory, Los Alamos Natl Lab
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Vladimir Y Chernyak
Chemistry and Mathematics, Wayne State University
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Wojciech Hubert Zurek
Los Alamos National Laboratory, Los Alamos Natl Lab