Deformations of CFT Beyond the First Order and Closed String Field Theory

TL;DR

This paper develops a self-consistent string field theory incorporating interactions, exploring its symmetry algebra and low-energy solutions, including the Brans-Dicke equation, to advance understanding of string deformations beyond first order.

Contribution

It formulates a new interacting string field theory with a detailed analysis of its symmetry algebra and low-energy solutions, extending previous models beyond first-order deformations.

Findings

The theory includes local space-time symmetries in the low-energy limit.

The Brans-Dicke equation emerges as a class of solutions.

The formulation advances the understanding of string deformations beyond first order.

Abstract

A self-consistent string field theory with interaction is formulated. The symmetry algebra of this theory includes, in the low-energy limit, local space-time symmetries, and the Brans-Dicke equation describes a class of low-energy solutions. (Talk given at the conference Journees Relativistes'93 held on April 5-7 1993, To be published in the International Journal of Modern Physics D.)