Application of the inhomogeneous Kibble-Zurek mechanism to quench dynamics in the transition from a Mott insulator to a superfluid in a finite system
Application of the inhomogeneous Kibble-Zurek mechanism to quench dynamics in the transition from a Mott insulator to a superfluid in a finite system
复制标题
非均匀 Kibble-Zurek 机制在有限系统中从莫特绝缘体到超流体转变过程中淬灭动力学的应用
DOI:
10.1103/physreva.103.013310
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发表时间:
2021
影响因子:
2.9
通讯作者:
Kasamatsu Kenichi
中科院分区:
文献类型:
--
作者:
Machida Yoshihiro;Kasamatsu Kenichi
We apply the theory of the inhomogeneous Kibble-Zurek mechanism to understand the quench dynamics in the transition from a Mott insulator to a superfluid in a cold Bose gas confined in both a two-dimensional optical lattice and a harmonic trap. The local quench time and the resulting Kibble-Zurek diabatic-adiabatic boundary take a nontrivial positional dependence due to the Mott-lobe structure of the ground-state phase diagram of the Bose-Hubbard model. We demonstrate the quench dynamics through the time-dependent Gutzwiller simulations, revealing inhomogeneous properties of the growth of the superfluid order parameter. The inhomogeneous Kibble-Zurek theory is applicable to the shallow harmonic trap.
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DOI:
--
发表时间:
2012
期刊:
影响因子:
--
作者:
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2.9
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