  During this work, using subtraction renormalization mechanism, zero point
quantum fluctuations for bosonic scalar fields in a de-Sitter like background
are investigated. By virtue of the observed value for spectral index, $n_s(k)$,
for massive scalar field the best value for the first slow roll parameter,
$\epsilon$, is achieved. In addition the energy density of vacuum quantum
fluctuations for massless scalar field is obtained. The effects of these
fluctuations on other components of the Universe are studied. By solving the
conservation equation, for some different examples, the energy density for
different components of the Universe are obtained. In the case which, all
components of the Universe are in an interaction, the different dissipation
functions, $\tilde{Q}_{i}$, are considered. The time evolution of
${\rho_{DE}(z)}/{\rho_{cri}(z)}$ shows that $\tilde{Q}=3 \gamma H(t) \rho_{m}$
has best agreement in comparison to observational data including CMB, BAO and
SNeIa data set.
