Polyakov effective action from functional renormalization group equation
We discuss the Polyakov effective action for a minimally coupled scalar field on a two dimensional curved space by considering a non-local covariant truncation of the effective average action. We derive the flow equation for the form factor in {integral}{radical}(g)Rc{sub k}({Delta})R, and we show how the standard result is obtained when we integrate the flow from the ultraviolet to the infrared.
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSIC↗