The Polyakov action is an important concept in theoretical physics, particularly in the context of string theory. It is a two-dimensional field theory that describes the dynamics of strings in spacetime. Named after the physicist Alexander Polyakov, the action provides a framework to model how strings propagate and interact in a background spacetime.
Articles by others on the same topic
The Polyakov action introduces an independent worldsheet metric :Its metric equation makes conformal to the induced worldsheet metric, reducing it classically to the Nambu–Goto action.