Title: Longevity of Quantum Effects in Cosmology

Abstract: The universe, which is presumably born quantum, is assumed to have shed its quantum character gradually as it grew and expanded out of the initial quantum gravity domain. The inflationary era is predominantly understood to be a semiclassical regime where quantum matter/perturbations propagate over a classical background. We will explore the naturalness of such assumptions and settings and see if there are cases where such settings can be expected to receive significant corrections, finding the answer in affirmative. More interestingly and counter intuitively, we shall argue that even the very late time (present  day) era could not be completely free of quantum corrections as generally believed. Interesting implications of such effects will be discussed.