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Atomic Quantum Simulation of Dynamical Gauge Fields Coupled to Fermionic Matter: From String Breaking to Evolution after a Quench

机译:耦合费米子物质的动态规范场的原子量子模拟:从弦断裂到淬火后的演化

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摘要

Using a Fermi-Bose mixture of ultracold atoms in an optical lattice, we construct a quantum simulator for a U(1) gauge theory coupled to fermionic matter. The construction is based on quantum links which realize continuous gauge symmetry with discrete quantum variables. At low energies, quantum link models with staggered fermions emerge from a Hubbard-type model which can be quantum simulated. This allows us to investigate string breaking as well as the real-time evolution after a quench in gauge theories, which are inaccessible to classical simulation methods.
机译:在光学晶格中使用超冷原子的费米-玻色混合物,我们为耦合到铁离子物质的U(1)规理论构建了一个量子模拟器。该构造基于量子链接,该链接实现具有离散量子变量的连续量规对称性。在低能状态下,具有交错费米子的量子链模型从可以进行量子模拟的哈伯德型模型中产生。这使我们能够研究规范理论失灵后的字符串断裂以及实时演变,而经典模拟方法无法做到这一点。

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  • 来源
    《Physical review letters》 |2012年第17期|175302.1-175302.5|共5页
  • 作者单位

    Albert Einstein Center, Institute for Theoretical Physics, Bern University, CH-3012, Bern, Switzerland;

    Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria,Institute for Theoretical Physics, Innsbruck University, A-6020 Innsbruck, Austria;

    Departamento de Fisica Teorica I, Universidad Complutense, 28040 Madrid, Spain;

    Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria,Institute for Theoretical Physics, Innsbruck University, A-6020 Innsbruck, Austria;

    Albert Einstein Center, Institute for Theoretical Physics, Bern University, CH-3012, Bern, Switzerland;

    Albert Einstein Center, Institute for Theoretical Physics, Bern University, CH-3012, Bern, Switzerland;

    Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences, A-6020 Innsbruck, Austria,Institute for Theoretical Physics, Innsbruck University, A-6020 Innsbruck, Austria,Joint Quantum Institute: National Institute of Standards and Technology, and University of Maryland, College Park, Maryland 20742, USA;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    lattice gauge theory; quantized spin models;

    机译:晶格规理论量化自旋模型;

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