The role of noise in the early universe

In this paper, we consider a quantum mechanical system to model the effect of fields on evolution early universe. The consists an inverted oscillator bilinearly coupled set harmonic oscillators. We point out that role noise may be crucial in dynamics oscillator, which is analyzed using theory oscillators with random frequency. Using analogy, argue due fluctuations around its mean value, positive vacuum energy density would not produce exponentially expanding but oscillating universe, same fashion pendulum stabilized by oscillations suspension (stochastic Kapitza pendulum). results emphasize relevance scale factor.