Inflation in minimal left-right symmetric model with spontaneous D-parity breaking

It is now widely believed that the Universe has gone through a period of inflation [1] at the earliest moment of its history. Inflation is required to explain finely tuned initial conditions of the standard hot big bang cosmology, as well as to solve many cosmological problems such as homogeneity, isotropy and flatness of the observable Universe. Moreover, it is predicted that during inflation primordial density perturbations, necessary for large scale structure in the Universe and the temperature fluctuations in the cosmic microwave background (CMB), are generated from quantum fluctuations. The mechanism of inflation is now a well established subject [2], and recent observations of the galaxy distribution and the CMB are in strong favor of inflation [3].