Aspects of cosmic inflation and microwave background radiation

While the concepts of cosmic inflation have survived for more than two decades, we still do not know how inflation was triggered and how our universe evolved since then. The main theme of this thesis is to present some attempts at building and testing realistic inflationary cosmology scenarios. For building of inflation models, we place an emphasis on high energy particle theory which most likely governs the dynamics in the early universe. For testing of inflation, we give detailed account on the cosmic perturbation theory in view of current/future CMB data.