Collective modes of trapped interacting bosons

G. Gnanapragasam; M. P. Das

doi:10.1142/s0217979208050103

Collective modes of trapped interacting bosons

G. Gnanapragasam^*, M. P. Das

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The derivation for collective modes of an interacting Bose gas trapped by an isotropic harmonic oscillator potential is presented using field-theoretic method. The presence of the two-body scattering term beyond the mean-field is seen to appear inevitably in the calculations, even in the simplest approximation. As a result we see the occurrence of a small number of non-condensate atoms in the ground state density fluctuations.

Original language	English
Pages (from-to)	4349-4357
Number of pages	9
Journal	International Journal of Modern Physics B
Volume	22
Issue number	25-26
DOIs	https://doi.org/10.1142/s0217979208050103
Publication status	Published - 20 Oct 2008

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abstract = "The derivation for collective modes of an interacting Bose gas trapped by an isotropic harmonic oscillator potential is presented using field-theoretic method. The presence of the two-body scattering term beyond the mean-field is seen to appear inevitably in the calculations, even in the simplest approximation. As a result we see the occurrence of a small number of non-condensate atoms in the ground state density fluctuations.",

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AU - Das, M. P.

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N2 - The derivation for collective modes of an interacting Bose gas trapped by an isotropic harmonic oscillator potential is presented using field-theoretic method. The presence of the two-body scattering term beyond the mean-field is seen to appear inevitably in the calculations, even in the simplest approximation. As a result we see the occurrence of a small number of non-condensate atoms in the ground state density fluctuations.

AB - The derivation for collective modes of an interacting Bose gas trapped by an isotropic harmonic oscillator potential is presented using field-theoretic method. The presence of the two-body scattering term beyond the mean-field is seen to appear inevitably in the calculations, even in the simplest approximation. As a result we see the occurrence of a small number of non-condensate atoms in the ground state density fluctuations.

KW - Collective modes

KW - Harmonically confined

KW - Interacting Bose gas

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DO - 10.1142/s0217979208050103

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VL - 22

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JO - International Journal of Modern Physics B

JF - International Journal of Modern Physics B

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Collective modes of trapped interacting bosons

Abstract

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