Heterotic instantons and solitons in anomaly-free supergravity

TL;DR

This paper extends heterotic instanton solutions to all orders in ' using anomaly-free supergravity equations and explores their connection to string theory -function equations.

Contribution

It provides a comprehensive extension of heterotic instanton solutions to all orders in ' within anomaly-free supergravity framework.

Findings

Extended instanton solutions to all orders in '

Clarified relation between supergravity equations and string -functions

Contributed to understanding anomaly cancellation in heterotic theories

Abstract

We extend the classical heterotic instanton solutions to all orders in $\alpha'$ using the equations of anomaly-free supergravity, and discuss the relation between these equations and the string theory $\beta$-functions.