PreprintCC BY 4.0arXiv
The heterotic superpotential and the alpha' expansion
Abstract
We study the role of the Hull connection in the heterotic superpotential for N=1 d=4 vacua. The integrand is defined in terms of H, which is in turn defined in terms of a gravitational Chern--Simons coupling involving H. We show this recursive structure is key to W reproducing some of the ten--dimensional supersymmetry conditions written down by Bergshoeff--de Roo through α'^3. With this evidence in hand we make some observations about extending some of the tensor equations of Hull and Strominger to all orders in α'.
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BibTeX
@misc{mcorist2026heterotic,
title = {{The heterotic superpotential and the alpha' expansion}},
author = {Jock McOrist},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.36604},
eprint = {2610.36604},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.36604},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - The heterotic superpotential and the alpha' expansion
AU - Jock McOrist
PY - 2026
DA - 2026/10/27
PB - arXiv
DO - 10.48550/arxiv.2610.36604
UR - https://arxiv.org/abs/2610.36604
AB - We study the role of the Hull connection in the heterotic superpotential for N=1 d=4 vacua. The integrand is defined in terms of H, which is in turn defined in terms of a gravitational Chern--Simons coupling involving H. We show this recursive structure is key to W reproducing some of the ten--dimensional supersymmetry conditions written down by Bergshoeff--de Roo through α'^3. With this evidence in hand we make some observations about extending some of the tensor equations of Hull and Strominger to all orders in α'.
ER -