Padéapproximant approach to singular properties of quantum gases:the ideal cases

作     者：Yuan-Hong Tian Wen-Du Li Yao Shen Wu-Sheng Dai 田远鸿;李文都;沈尧;戴伍圣

作者机构：Department of PhysicsTianjin UniversityTianjin 300350China College of Physics and Materials ScienceTianjin Normal UniversityTianjin 300387China School of Criminal Investigation and Forensic SciencePeople's Public Security University of ChinaBeijing 100038China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2021年第73卷第6期

页      面：131-139页

核心收录：

学科分类：080701[工学-工程热物理] 07[理学] 08[工学] 0807[工学-动力工程及工程热物理] 070201[理学-理论物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：supported in part by The Fundamental Research Funds for the Central Universities under Grant No.2020JKF306 Special Funds for theoretical physics Research Program of the NSFC under Grant No.11947124,and NSFC under Grant Nos.11575125 and 11675119 

主　　题：approximate analytic continuation virial expansion Padéapproximant quantum gas 

摘      要：In this paper,we show how to recover the low-temperature and high-density information of ideal quantum gases from the high-temperature and low-density approximation by the Padé*** virial expansion is a high-temperature and low-density expansion and in practice,often,only the first several virial coefficients can be *** Bose gases,we determine the BEC phase transition from a truncated virial *** Fermi gases,we recover the low-temperature and high-density result from the virial expansion.