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arXiv 1207.3777cond-mat.str-el
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一维玻色子系统量子猝灭后的时间演化和临界时刻的动力学相变

Time-evolution and dynamical phase transitions at a critical time in a system of one dimensional bosons after a quantum quench

Aditi Mitra

摘要:

本文用重整化群方法证明了一维玻色子系统在晶格猝灭下发生有限时间动力学相变,其中光锥内的序参量在临界时间后作为时间的非解析函数增加.这样的过渡也被发现为同时晶格和相互作用淬火的晶格的有效缩放尺寸变得依赖于时间,至关重要地影响系统的时间演化。给出了玻色子相互作用参数和动力学跃迁的序参量以及更一般的猝灭的时间演化的显式结果。

英文摘要:

A renormalization group approach is used to show that a one dimensional system of bosons subject to a lattice quench exhibits a finite-time dynamical phase transition where an order parameter within a light-cone increases as a non-analytic function of time after a critical time. Such a transition is also found for a simultaneous lattice and interaction quench where the effective scaling dimension of the lattice becomes time-dependent, crucially affecting the time-evolution of the system. Explicit results are presented for the time-evolution of the boson interaction parameter and the order parameter for the dynamical transition as well as for more general quenches.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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