期刊
ACTA PHYSICA POLONICA B
卷 53, 期 1, 页码 -出版社
JAGIELLONIAN UNIV PRESS
DOI: 10.5506/APhysPolB.53.1-A3
关键词
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The study reports on the computation of the ground-state energy for a mixture of fermions, showing that the results can be reproduced using effective field theory techniques.
We report on the results of the computation of the order of (kFa(0))(2) correction, where k(F) = 3 pi(2)rho is the Fermi wave vector and a(0) the s-wave scattering length of the repulsive interaction, to the ground-state energy of a mixture of oppositely polarized N-a spin-1/2 fermions a of masses m(a) and N-b spin-1/2 fermions b of masses m(b) (rho = N/V, N = N-a+N-b). It is shown that the results of the paper in which the same correction has been computed entirely numerically, using a more traditional approach, can be easily and semianalytically reproduced using the effective field theory technique.
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