# alpha&#x27;-Corrections to Heterotic Superstring Effective Action Revisited - High Energy Physics - Theory

Abstract: In this letter we establish that the supersymmetric R^2 effective action forthe heterotic string, obtained from the supersymmetrisation of the LorentzChern-Simons term, is to order $\alpha-$ equivalent modulo field redefinitionsto heterotic string effective actions computed by different methods.

Author: W.A. Chemissany, Mees de Roo, Sudhakar Panda

Source: https://arxiv.org/