Properties of excitations in systems with a spinor Bose-Einstein condensate

Peter Szepfalusy, Gergely Szirmai

Published 1999-10-01Version 1

General theory in case of homogenous Bose-Einstein condensed systems with spinor condensate is presented for the correlation functions of density and spin fluctuations and for the one-particle propagators as well. The random phase approximation is investigated and the damping of the modes is given in the intermediate temperature region. It is shown that the collective and the one-particle excitation spectra do not coincide fully.