【报告题目】：Collective motions in one dimension: From Tomonaga-Luttinger to Luther-Emery Liquids
【报 告 人】：管习文研究员，中科院精密测量科学与技术创新研究院
【报告时间】：2026年7月3日（周五），10:30
【报告地点】：29-414
【报告摘要】：Collective motions pervade nature. In one-dimensional (1D) repulsive interacting fermions (Yang–Gaudin, Hubbard models, etc.), low-energy excitations split into two collective modes carrying only fractionalized spin or charge--spin-charge separation, a defining signature exclusive to 1D. Conversely, attractive 1D fermion systems support unconventional polarization-dependent BCS pairing phases: Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) states and Luther–Emery liquids (LEL). The LEL features fully paired fermions with gapped spin but gapless charge excitations in contrat to both gapless spin and charge excitations in the FFLO states. Experimental probing and full theoretical characterization of these exotic quantum liquids have long proven difficult. This talk leverages Bethe ansatz and bosonization to unravel the microscopic origins and experimental accessibility of distinct 1D interacting-fermion quantum liquids: spin-charge separation, spin-incoherent Luttinger liquids, FFLO pairing, and LEL.
参考文献：
[1] Spin-charge separation in a 1D Fermi gas with tunable interactions, Science 376, 1305 (2022), R. Senaratne, X Guan, R. Hulet
[2]Low Energy Excitations of a 1D Fermi Gas with Attractive Interactions, arXiv:2512.08866, 2025, A Kafle, X Guan, R Hulet
[3]Tomonaga-Luttinger liquid theory for one-dimensional attractive Fermi gases, arXiv:2603.13958, 2026, H Cui, Y Yeh, R Hullet, H Pu, T Giamarchi, X Guan
【报告人简介】：管习文研究员，中科院精密测量科学与技术创新研究院，美国物理学会会士，2024年获得湖北省自然科学一等奖。主要成果是创建了一维量子多体系统普适规律和量子关联的核心理论方法，解决了数十年来相关理论缺乏实验验证的难题。至今发表160余篇SCI论文，包括《Science》、《物理评论快报》、《现代物理评论》等国际顶级期刊，多项理论预言得到实验验证。研究方向聚焦前沿：长期专注于量子严格可解模型、超冷原子体系、自旋系统等领域的研究，为量子精密测量和量子科技提供理论支持。
