ITERATIVE BOSON EXPANSIONS AND MEAN-FIELD APPROXIMATIONS FOR BOSON SYSTEMS

被引：2
|
作者：
BIJKER, R
PITTEL, S
DUKELSKY, J
机构：
[1] UNIV DELAWARE,BARTOL RES INST,NEWARK,DE 19716
[2] UNIV AUTONOMA MADRID,DEPT FIS TEOR,E-28049 MADRID,SPAIN
来源：
NUCLEAR PHYSICS A | 1992年 / 537卷 / 1-2期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1016/0375-9474(92)90154-C
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
Iterative boson expansion techniques are suggested as a systematic procedure to incorporate correlations into a mean-field description of both the ground state and excited bands of many-boson systems. The method is illustrated by applying it to an exactly solvable system of interacting bosons which exhibits a phase transition from a deformed mean field to a boson superfluid state.
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页码：13 / 44
页数：32
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