  We have studied collective spin density excitations of fractional quantum
Hall effect (FQHE) in rotating Bose-Einstein condensation for the three filling
fractions of first series of Jain's composite fermion sequences. We have
considered, short-ranged contact interactions between the Bose atoms as well as
long range Coulomb interactions to compare the nature of the spectras with FQHE
of electrons. Using Monte Carlo method for finite but large number of
particles, the lowest order collective modes of spin-reversed sectors is
calculated here, by computing the energy differences of the respective excitons
from the fully polarized ground states.
