Functional Integral Approach to the Transition Temperature of Attractive Interacting Bose Gas in Traps

Chin. Phys. Lett.

2004, Vol. 21

Issue (7): 1201-1204 DOI:

Original Articles

Functional Integral Approach to the Transition Temperature of Attractive Interacting Bose Gas in Traps

HU Guang-Xi^1,2;DAI Xian-Xi²

¹State Key Laboratory of ASIC & System, Fudan University, Shanghai 200433 ²Department of Physics, Fudan University, Shanghai 200433

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HU Guang-Xi, DAI Xian-Xi 2004 Chin. Phys. Lett. 21 1201-1204

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Abstract The functional integral approach (FIA) is introduced to study the transition temperature of an imperfect Bose gas in traps. An interacting model in quantum statistical mechanics is presented. With the model we study a Bose gas with attractive interaction trapped in an external potential. We obtain the result that the transition temperature of a trapped Bose gas will slightly shift upwards owing to the attractive interacting force. Successful application of the FIA to Bose systems is demonstrated.

Keywords: 03.75.Fi 05.30.Jp

Published: 01 July 2004

PACS:	03.75.Fi
	05.30.Jp	(Boson systems)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2004/V21/I7/01201

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