Massive fields dynamics in open bosonic string theory

TL;DR

This paper investigates the dynamics of massive background fields in open bosonic string theory, proposing a covariant action and deriving equations of motion through renormalization and symmetry considerations.

Contribution

It introduces a covariant action for first massive level background fields and analyzes their symmetries and equations of motion within open bosonic string theory.

Findings

Proposed a covariant action for massive background fields.

Derived equations of motion from renormalization conditions.

Analyzed symmetries of the background field equations.

Abstract

We consider the theory of open bosonic string in massive background fields. The general structure of renormalization is investigated. A general covariant action for a string in background fields of the first massive level is suggested and its symmetries are described. Equations of motion for the background fields are obtained by demanding that the renormalized operator of the energy-momentum tensor trace vanishes.