Duality Symmetric Strings, Dilatons and O(d,d) Effective Actions

TL;DR

This paper derives the full set of background field equations for duality symmetric strings including dilaton effects up to two loops, leading to an O(d,d) invariant effective action.

Contribution

It extends previous work by incorporating the dilaton into the duality symmetric string framework and deriving the corresponding effective action.

Findings

Derived the two-loop beta functionals including dilaton effects.

Established the O(d,d) invariant target space effective action.

Provided a comprehensive understanding of duality symmetric string backgrounds.

Abstract

We calculate the background field equations for the T-duality symmetric string building on previous work by including the effect of the Dilaton up to two-loops. Inclusion of the Dilaton allows us to obtain the full beta functionals of the duality symmetric sigma model. We are able to interpret the result in terms of a dimensionally reduced O(d,d) invariant target space effective action.