# On the Spectrum and Spacetime Supersymmetry of Heterotic Ambitwistor String

## TL;DR

This paper investigates the BRST cohomology and supersymmetry structure of heterotic ambitwistor string theory, providing insights into its spectrum and symmetries.

## Contribution

It offers a detailed analysis of the Ramond sector cohomology and formulates the free string field theory action with supersymmetry transformations.

## Key findings

- BRST cohomology of the Ramond sector characterized
- Explicit form of supersymmetry transformations derived
- Framework for heterotic ambitwistor string spectrum established

## Abstract

We analyse the BRST cohomology of the Ramond sector of heterotic ambitwistor theory. We also write the free string field theory action and compute the supersymmetry transformations.