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Dynamics of compact quantum electrodynamics at large fermion flavor

机译：大费米子味的致密量子电动力学

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摘要

Thanks to the development in quantum Monte Carlo technique, the compact U(1) lattice gauge theory coupled to fermionic matter at (2 + 1)D is now accessible with large-scale numerical simulations, and the ground state phase diagram as a function of fermion flavor (N-f) and the strength of gauge fluctuations is mapped out. Here we focus on the large fermion flavor case (N-f = 8) to investigate the dynamic properties across the deconfinement-to-confinement phase transition. In the deconfined phase, fermions coupled to the fluctuating gauge field to form U(1) spin liquid with continua in both spin and dimer spectral functions, and in the confined phase fermions are gapped out into valence bond solid phase with translational symmetry breaking and gapped spectra. The dynamical behaviors provide supporting evidence for the existence of the U(1) deconfined phase and could shine light on the nature of the U(1)-to-VBS phase transition which is of the QED(3)-Gross-Neveu chiral O(2) universality whose properties are still largely unknown.
机译：由于量子蒙特卡洛技术的发展，紧凑的U（1）晶格规理论与（2 +1）D处的铁离子物质耦合，现在可以通过大规模数值模拟获得，并且基态相图可以作为函数的函数。绘制了费米子味（Nf）和规格波动的强度。在这里，我们集中在大型费米子味情况下（N-f = 8），以研究从限制到限制的相变的动态特性。在限定相中，费米子耦合到波动的标称场，形成具有自旋和二聚体光谱函数连续性的U（1）自旋液体，在受限相中，费米子被跃迁成价键固相，并具有平移对称性断裂并出现缺口光谱。动力学行为为U（1）受限相的存在提供了支持证据，并且可以揭示Q（3）-Gross-Neveu手性O的U（1）到VBS相变的性质。 （2）普遍性，其性质仍然未知。

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  • 来源
    《Physical review》 |2019年第8期|085123.1-085123.12|共12页
  • 作者

    Wang Wei; Lu Da-Chuan; Xu Xiao Yan; You Yi-Zhuang; Meng Zi Yang;

  • 作者单位

    Chinese Acad Sci Beijing Natl Lab Condensed Matter Phys Beijing 100190 Peoples R China|Chinese Acad Sci Inst Phys Beijing 100190 Peoples R China|Univ Chinese Acad Sci Sch Phys Sci Beijing 100190 Peoples R China;

    Univ Calif San Diego Dept Phys La Jolla CA 92093 USA;

    Hong Kong Univ Sci & Technol Dept Phys Clear Water Bay Hong Kong Peoples R China;

    Chinese Acad Sci Beijing Natl Lab Condensed Matter Phys Beijing 100190 Peoples R China|Chinese Acad Sci Inst Phys Beijing 100190 Peoples R China|Univ Chinese Acad Sci Sch Phys Sci Beijing 100190 Peoples R China|Univ Hong Kong Dept Phys Pokfulam Rd Hong Kong Peoples R China|Univ Chinese Acad Sci CAS Ctr Excellence Topol Quantum Computat Beijing 100190 Peoples R China|Songshan Lake Mat Lab Dongguan 523808 Guangdong Peoples R China;

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