Effective interactions of3He quasipartic
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Gordon Baym
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Article
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1975
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Springer US
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English
β 307 KB
We compute the effective interaction at long wavelength of two opposite-spin 3He in superfluid 4He to second order in 3HeJHe mass difference perturbation theory. The correction to the Bardeen, Baym, Pines result V(0) = -~2m4s2/n 4, in second order, is expressed exactly in terms of the dependence of