A formulation of QFT for BEC system in a trap is presented. The formulation can be extended straightforwardly to thermal field theory to include thermal fluctuation as well. The scheme is more fundamental than the mean-field approximation and the Bogoliubov approach.
|ジャーナル||Physical Review A - Atomic, Molecular, and Optical Physics|
|出版物ステータス||Published - 2003 7|
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics