Massless minimal quantum scalar field with an asymmetric self interaction in de Sitter spacetime

Sourav Bhattacharya

Massless minimally coupled quantum scalar field with an asymmetric self interaction, $V(\varphi )=\lambda {\varphi }^4/4!+\beta {\varphi }^3/3!$ (with $\lambda >0$) is considered in the $(3+1)$-dimensional inflationary de…