The O(N) nonlinear sigma model in the functional Schrodinger picture

被引：5
|
作者：
Kim, DK
Kim, CK
机构：
[1] Elect & Telecommun Res Inst, Taejon 305600, South Korea
[2] Yonsei Univ, Dept Phys, Seoul 120749, South Korea
[3] Yonsei Univ, Inst Math Sci, Seoul 120749, South Korea
来源：
JOURNAL OF PHYSICS A-MATHEMATICAL AND GENERAL | 1998年 / 31卷 / 28期
关键词：
D O I：
10.1088/0305-4470/31/28/016
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present a functional Schrodinger picture formalism of the (1 + 1)-dimensional O(N) nonlinear sigma model. The energy density has been calculated to two-loop order using the wavefunctional of Gaussian form, and from which the non-perturbative mass gap of the boson fields has been obtained. The functional Schrodinger picture approach combined with the variational technique is shown to describe the characteristics of the ground state of the nonlinear sigma model in a transparent way.
引用
收藏
页码：6029 / 6036
页数：8
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