  Emergent scenario of cosmic evolution is a topic of great interest in recent
cosmology, especially because it describes a non-singular origin of the
Universe unlike the Big-Bang models. This types of cosmic evolution pattern
have already been established through the non-equilibrium thermodynamic
prescription. But those models are phenomenological and requires physical
interpretation from the perspective of quantum field theory. This work is an
effort to search a quantum field theoretical reason to justify the emergent
nature of the Universe and the nature of cosmic evolution at the early phase of
the cosmic expansion. Keywords : Non-singular evolution of the Universe,
Quantum field theory, Cosmology.
