Mean-field methods are a very powerful tool for investigating weakly interacting many-body systems in many branches of physics. In particular, they describe with excellent accuracy trapped Bose-Einstein condensates. A generic, but difficult question concerns the relation between the symmetry properties of the true many-body state and its mean-field approximation. Here, we address this question by considering, theoretically, vortex nucleation in a rotating Bose-Einstein condensate. A slow sweep of the rotation frequency changes the state of the system from being at rest to the one containing one vortex. Within the mean-field framework, the jump in symmetry occurs through a turbulent phase around a certain critical frequency. The exact many-body ground state at the critical frequency exhibits strong correlations and entanglement. We believe that this constitutes a paradigm example of symmetry breaking in - or change of the order parameter of - quantum many-body systems in the course of adiabatic evolution.
Vortex formation of a Bose-Einstein condensate in a rotating deep optical lattice
通过数值模拟Gros-Pitaevskii方程，研究了旋转正方形光晶格中玻色-爱因斯坦凝聚体中涡旋成核和晶格形成的动力学过程.不同的动力学制度的涡旋成核，这取决于光晶格的深度和周期。我们与Williams { \it et al.}的实验进行了广泛的比较。[Phys. Rev. Lett. { \bf 104}，050404（2010）]，特别关注第一涡流成核的临界旋转频率和作为旋转频率的函数的涡流数的问题。
Reproducible nucleation and control of stable quantum vortex rings in Bose-Einstein condensates
Università degli Studi di Milano（米兰大学）；Politecnico di Torino（都灵理工大学）；Ulsan National Institute of Science and Technology (UNIST)（蔚山科学技术院）；Istituto per le Applicazioni del Calcolo, Consiglio Nazionale delle Ricerche（意大利国家研究委员会计算应用研究所）；Newcastle University（纽卡斯尔大学）
Vortex dynamics in rotating dipolar supersolids across Josephson and self-trapping regimes
University of the Basque Country UPV/EHU（巴斯克大学）；IKERBASQUE, Basque Foundation for Science（伊卡巴斯基奎巴斯克科学基金会）；Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales（布宜诺斯艾利斯大学理学院）；CONICET - Universidad de Buenos Aires, Instituto de Física de Buenos Aires (IFIBA)（阿根廷国家科学研究委员会-布宜诺斯艾利斯大学布宜诺斯艾利斯物理研究所）
Impurity-controlled vortex mobility and pair-breaking in fermionic superfluid rings
Institute of Physics, Polish Academy of Sciences（波兰科学院物理研究所）；Faculty of Physics, Warsaw University of Technology（华沙理工大学物理学院）；Department of Physics, University of Washington（华盛顿大学物理系）；Politecnico di Torino（都灵理工大学）
Pressure and Size Dependence of Roton Emission and Vortex Creation by Moving Objects in He~II in $T \to 0$ Limit: Generalized Nonlocal Gross-Pitaevskii Model
Laboratoire de Physique des Plasmas (LPP), CNRS, Observatoire de Paris, Sorbonne Université, Université Paris-Saclay, École polytechnique, Institut Polytechnique de Paris（等离子体物理实验室，法国国家科学研究中心，巴黎天文台，索邦大学，巴黎萨克雷大学，巴黎综合理工学院，巴黎理工学院）；Faculty of Mathematics and Physics, Charles University（查理大学数学与物理学院）；School of Mathematics, Statistics and Physics, Newcastle University（纽卡斯尔大学数学、统计与物理学院）；Université Côte d’Azur, CNRS, Institut de Physique de Nice (INPHYNI)（蔚蓝海岸大学，法国国家科学研究中心，尼斯物理研究所）
Université Côte d’Azur（蔚蓝海岸大学）；CNRS（法国国家科学研究中心）；Institut de Physique de Nice (INPHYNI)（尼斯物理研究所）；Laboratoire d’hydrodynamique, LadHyX, UMR 7646, CNRS & Ecole Polytechnique, IPParis（流体力学实验室、拉德海克斯实验室、CNRS与巴黎综合理工学院、IPParis）；Pontifica Universidad Católica de Chile（智利天主教 Pontifica 大学）
Minimal superfluid vortices in chiral perturbation theory
Centro de Estudios Científicos (CECS)（科学研究中心）；Universidad San Sebastián, sede Valdivia（塞巴斯蒂安大学瓦尔迪维亚校区）；Universidad de Concepción (UDEC)（康塞普西翁大学）；Laboratori Nazionali del Gran Sasso, INFN（格兰萨索国家实验室，意大利国家核物理研究所）
