Dynamical thermalization in isolated quantum dots and black holes

Dynamical thermalization in isolated quantum dots and black holes
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孤立量子点和黑洞的动态热化

DOI:
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发表时间:
2016
期刊:
影响因子:
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通讯作者:
D. Shepelyansky
D. Shepelyansky
中科院分区:
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文献类型:
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作者:
A. Kolovsky;D. Shepelyansky

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我们用数值方法研究了具有相互作用费米子的量子点模型。在强相互作用和小电导相互作用下,模型简化为Sachdev-Ye-Kitaev黑洞模型,而在弱相互作用和大电导作用下,它描述了处于量子混沌区域的朗道-费米液体。我们发现,在相互作用的奥贝格阈值以上,动力学主题化的开始与描述孤立点本征态的费米-狄拉克分布有关。在孤立黑洞区域的强相互作用下,也存在由量子吉布斯分布描述的熵的动力学热化的开始。这种动态热化是在一个孤立的系统中进行的,与恒温器没有任何接触。我们讨论了在光学晶格中用2D电子和冷离子组成的量子点实现这些机制的可能性。
We study numerically a model of quantum dot with interacting fermions. At strong interactions with small conductance the model is reduced to the Sachdev-Ye-Kitaev black-hole model while at weak interactions and large conductance it describes a Landau-Fermi liquid in a regime of quantum chaos. We show that above the Åberg threshold for interactions there is an onset of dynamical themalization with the Fermi-Dirac distribution describing the eigenstates of an isolated dot. At strong interactions in the isolated black-hole regime there is also the onset of dynamical thermalization with the entropy described by the quantum Gibbs distribution. This dynamical thermalization takes place in an isolated system without any contact with a thermostat. We discuss the possible realization of these regimes with quantum dots of 2D electrons and cold ions in optical lattices.
用超冷气体进行量子引力研究的提议:Sachdev-Ye-Kitaev 模型的案例
DOI: --
发表时间: 2017
期刊:
影响因子: --
作者:
Mayumi Kamada;Masahiko Nakatsui;Yasushi Okuno;Masaki Tezuka
通讯作者: Masaki Tezuka
DOI: 10.1103/physrevd.94.106002
发表时间: 2016-11-04
期刊: PHYSICAL REVIEW D
影响因子: 5
作者:
Maldacena, Juan;Stanford, Douglas
通讯作者: Stanford, Douglas