Nonadiabatic Phase Transition with Broken Chiral Symmetry

14 Dec 2020  ·  Bin Yan, Vladimir Y. Chernyak, Wojciech H. Zurek, Nikolai A. Sinitsyn ·

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. read more

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Statistical Mechanics General Relativity and Quantum Cosmology High Energy Physics - Theory Quantum Physics