论文标题
手性对称性破裂的非绝热相变
Nonadiabatic Phase Transition with Broken Chiral Symmetry
论文作者
论文摘要
我们探索具有线性时间依赖性横向场和每单位细胞的两种不同自旋的Ising自旋链中的非绝热量子相变。这样的自旋系统通过无间隙激发通过关键点，这支持了非绝热的过渡。然而，我们发现其中一种链子层次的激发被指数抑制。因此，我们揭示了一种连贯的机制，可以诱导不同的准颗粒的指数较大密度分离。
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.
