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- Okumura M.
- Department of Physics, Waseda University
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- Yamanaka Y.
- Waseda University Senior High School
Bibliographic Information
- Other Title
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- トラップ中のBose-Einstein凝縮における南部-Goldstoneモードの解析(熱場の量子論とその応用,研究会報告)
- Analysis of Nambu Goldstone Mode in Trapped Bose Einstein condensates
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Abstract
We analyze the Nambu-Goldstone (NG) mode for a system of trapped Bose-Einstein condensation (BEC). The NG mode is a discrete mode in our case, contrary to the homogeneous case in which the NG mode is in a continuum labeled by a momentum index. In order to control the NG mode, an infinitesimal symmetry-breaking term is introduced. This breaking term plays the role of infinitesimal magnetic field in spin system which fixes the macroscopic "direction" of spin. We calculate a tadpole diagram to evaluate fluctuation effects, taking account of the NG mode, then find that the coefficient of the wave function of condensation is infrared divergent while the remaining terms are finite.
Journal
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- Soryushiron Kenkyu Electronics
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Soryushiron Kenkyu Electronics 105 (1), A89-A91, 2002
Soryushiron Kenkyu Editorial Office
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Details 詳細情報について
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- CRID
- 1390001204069027456
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- NII Article ID
- 110006412958
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- NII Book ID
- AN00135266
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- ISSN
- 24332895
- 03711838
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- NDL BIB ID
- 6149954
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- CiNii Articles
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- Abstract License Flag
- Disallowed