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.

*This work was carried out under the support of the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division, Condensed Matter Theory Program. B.Y. also acknowledges partial support from the Center for Nonlinear Studies.

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Presenters

  • Nikolai Sinitsyn

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

Authors

  • Nikolai Sinitsyn

    • Los Alamos Natl Lab
    • Los Alamos National Laboratory

  • Bin Yan

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab

  • Vladimir Y Chernyak

    • Chemistry and Mathematics, Wayne State University

  • Wojciech Hubert Zurek

    • Los Alamos National Laboratory
    • Los Alamos Natl Lab