Two-particle pairing in 2D Bose gases

被引：1
|
作者：
Efremov, DV
Kagan, MY
机构：
来源：
PHYSICA B-CONDENSED MATTER | 2003年 / 329卷
关键词：
2D; BEC; cooper pairing;
D O I：
10.1016/S0921-4526(02)01880-X
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We consider a possibility of two-boson pairing in a dilute 2D Bose-gas with strong hard-core repulsion and a Van der Waals attractive tail. We show that the phase diagram for a dilute Bose-gas of one sort of structureless bosons consists of two regions. The first one is the region of usual one-particle Bose-Einstein condensation. But the second one is the region of total phase separation on Mott-Hubbard Bose-solid and dilute Bose gas. However already for Bose-gas consisting of two sorts of structureless bosons described by the two band Hubbard model the s-wave pairing of the two bosons of different sorts <b(1)b(2)> not equal 0 is possible. (C) 2003 Elsevier Science B.V. All rights reserved.
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收藏
页码：30 / 31
页数：2
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