题名

Ground-State Energy of a One-Dimensional Many-Boson System

作者

Deor-Kyo Lee;李俊弘(Felix J. Lee)

关键词
期刊名称

Chinese Journal of Physics

卷期/出版年月

13卷2期(1975 / 10 / 01)

页次

188 - 204

内容语文

英文

英文摘要

The ground-state energy of a one-dimensional system of many bosons interacting via a repulsive s-function potential is carried out through third-order corrections, when the coupling parameter γ of the system is small. The procedures' are basically developed following both the Bogoliubov-Zubarev and the Davison-Feenberg methods. It is seen numerically that a slight difference exists in between, at least, starting from the third-order correction; the former one gives rise to a more improved agreement with the exact results obtained by Lieb and Liniger, and also, the variational contribution in the later is still dominant even in the third-order correction.

主题分类 基礎與應用科學 > 物理