Expansion of the energy per particle, units of :
References:
(1) V. Ya. Krivnov, A. A. Ovchinnikov, Sov. Phys. JETP 40, 781 (1975),
[Zh. Eksp. Teor. Fiz. 67 1568 (1974)]
(2) M. Casas, C. Esebbag, A. Extremera, J. M. Getino, M. de Llano, A.
Plastino, and H. Rubio, Phys. Rev. A 44, 4915 (1991)
(3) Here we correct result obtained in (2)
(4) New result
(5) A. Recati, P. O. Fedichev, W. Zwerger, and P. Zoller Phys. Rev. Lett. 90, 020401
(2003)
Expansion of the chemical potential, units of :
Speed of sound, units of
The frequency of the oscillations
Energy and chemical potential (LDA), units of
Size of the condensate and mean , units of