### Abstract

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.

Original language | English |
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Journal | Physical Review A - Atomic, Molecular, and Optical Physics |

Volume | 68 |

Issue number | 1 |

Publication status | Published - 2003 Jul |

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### ASJC Scopus subject areas

- Atomic and Molecular Physics, and Optics
- Physics and Astronomy(all)

### Cite this

**Proper treatment of the zero mode in quantum field theory for trapped Bose-Einstein condensation.** / Okumura, M.; Yamanaka, Yoshiya.

Research output: Contribution to journal › Article

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TY - JOUR

T1 - Proper treatment of the zero mode in quantum field theory for trapped Bose-Einstein condensation

AU - Okumura, M.

AU - Yamanaka, Yoshiya

PY - 2003/7

Y1 - 2003/7

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=0141572535&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0141572535&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0141572535

VL - 68

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 1

ER -