玻色晶格系统中的激发态量子相变
介观与纳米尺度物理
2019-10-02 v2 量子气体
核理论
摘要
聚焦于玻色晶格系统，我们探问在具有基态 QPT 的凝聚态系统中激发态量子相变（ESQPT）奇点是否及如何发生。我们特别研究了玻色 Hubbard 模型基态相图之上的谱奇点。作为一般前提，我们指出 ESQPT 与范霍夫奇点（vHss）之间的类比。
引用
@article{arxiv.1901.09677,
title = {Excited-State Quantum Phase Transitions in Bosonic Lattice Systems},
author = {Michal Macek},
journal= {arXiv preprint arXiv:1901.09677},
year = {2019}
}
备注
3 pages, 2 figures, to appear in AIP Conference Proceedings, Symmetries And Order: Algebraic Methods In Many Body Systems, In honor of Professor Francesco Iachello on the occasion of his retirement, October 5-6, 2018 at Yale University (v2 minor reformulations)