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We investigate the evolution of matter density perturbations in a universe with a cosmological term that decreases with time as a^-m. For fixed values of ₌₀ the power spectrum is constructed and we show that it is only slightly modified when the parameter m is changed from m=0 to m=2. Some properties concerning the peculiar velocity field are also discussed.
Silveira et al. (Sat,) studied this question.
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