QQ客服 官方微博 反馈留言

	Two-dimensional Bose-Einstein condensate under pressure
	Cho, W; Kim, SW; Park, JH
刊名	NEW JOURNAL OF PHYSICS
	2015
卷号	17期号:0页码:13038
关键词	ideal Bose gas emergence first-order phase transition two dimensions
通讯作者	Cho, W (reprint author), Sogang Univ, Dept Phys, Seoul 121742, South Korea.
英文摘要	Evading the Mermin-Wagner-Hohenberg no-go theorem and revisiting with rigor the ideal Bose gas confined in a square box, we explore a discrete phase transition in two spatial dimensions. Through both analytic and numerical methods, we verify that thermodynamic instability emerges if the number of particles is sufficiently yet finitely large: specifically, N >= 35131. The instability implies that the isobar of the gas zigzags on the temperature-volume plane, featuring supercooling and superheating phenomena. The Bose-Einstein condensation can then persist from absolute zero to the superheating temperature. Without necessarily taking the large N limit, under a constant pressure condition, the condensation takes place discretely both in the momentum and in the position spaces. Our result is applicable to a harmonic trap. We assert that experimentally observed Bose-Einstein condensations of harmonically trapped atomic gases are a first-order phase transition that involves a discrete change of the density at the center of the trap.
学科主题	Physics
类目[WOS]	Physics, Multidisciplinary
关键词[WOS]	LONG-RANGE ORDER ; SYMMETRY ; SYSTEMS ; TRAPS
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21112]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Cho, W,Kim, SW,Park, JH. Two-dimensional Bose-Einstein condensate under pressure[J]. NEW JOURNAL OF PHYSICS,2015,17(0):13038.
APA	Cho, W,Kim, SW,&Park, JH.(2015).Two-dimensional Bose-Einstein condensate under pressure.NEW JOURNAL OF PHYSICS,17(0),13038.
MLA	Cho, W,et al."Two-dimensional Bose-Einstein condensate under pressure".NEW JOURNAL OF PHYSICS 17.0(2015):13038.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。