Real-time dynamics and proposal for feasible experiments of lattice gauge-Higgs model simulated by cold atoms

被引：46

作者：

Kuno, Yoshihito ^{[1
]}

Kasamatsu, Kenichi ^{[2
]}

Takahashi, Yoshiro ^{[3
]}

Ichinose, Ikuo ^{[1
]}

Matsui, Tetsuo ^{[2
]}

机构：

[1] Nagoya Inst Technol, Dept Appl Phys, Nagoya, Aichi 4668555, Japan

[2] Kinki Univ, Dept Phys, Higashiosaka, Osaka 5778502, Japan

[3] Kyoto Univ, Grad Sch Sci, Dept Phys, Kyoto 6068502, Japan

来源：

NEW JOURNAL OF PHYSICS | 2015年 / 17卷

关键词：

cold atoms; quantum simulations; lattice gauge theory; SPIN; SYSTEMS; FIELDS;

D O I：

10.1088/1367-2630/17/6/063005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Lattice gauge theory has provided a crucial non-perturbative method in studying canonical models in high-energy physics such as quantum chromodynamics. Among other models of lattice gauge theory, the lattice gauge-Higgs model is a quite important one because it describes a wide variety of phenomena/models related to the Anderson-Higgs mechanism, such as superconductivity, the standard model of particle physics, and the inflation process of the early Universe. In this paper, we first show that atomic description of the lattice gauge model allows us to explore real-time dynamics of the gauge variables by using the Gross-Pitaevskii equations. Numerical simulations of the time development of an electric flux reveal some interesting characteristics of the dynamic aspect of the model and determine its phase diagram. Next, to realize a quantum simulator of the U(1) lattice gauge-Higgs model on an optical lattice filled by cold atoms, we propose two feasible methods: (i) Wannier states in the excited bands and (ii) dipolar atoms in a multilayer optical lattice. Wepay attention to the constraint of Gauss's law and avoid nonlocal gauge interactions.

引用

页数：16