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Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/14834

Title: Ground-state Energy of the Spinor Bose-Einstein Condensate
Authors: Huang, W. J.;Gou, Shih-Chuan
Contributors: 物理學系
Date: 1999-06
Issue Date: 2012-12-10T02:26:59Z
Publisher: The American Physical Society
Abstract: It is known that for a weakly interacting Bose-Einstein condensate (BEC), the assumption of a two-body δ interaction described by a constant coupling strength gives rise to a divergent ground-state energy. A similar divergence occurs in the spinor condensate in which the spin-spin interaction is included in addition to the repulsive δ interaction. In this paper, we examine, in the standard Bogoliubov approximation, the ground-state energy of a homogeneous spinor BEC with hyperfine spin f=1. The renormalized coupling constants are calculated and expressed in terms of the bare ones using the standard second-order perturbation method. With these renormalized coupling constants, we show that the ultraviolet divergence of the ground-state energy can be exactly eliminated.
Relation: Physical Review A, 59(6): 4608-4613
Appears in Collections:[物理學系] 期刊論文

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