2025/08/12 by Lescano, Eric · 2 citations
#FOS: Physical sciences #High Energy Physics - Theory (hep-th)
paper · doi:10.48550/arxiv.2508.09250
We present the first explicit construction of the four-derivative gravitational corrections to heterotic supergravity in the non-relativistic (NR) limit. By extending the Bergshoeff-de Roo identification to NR backgrounds, we obtain a finite higher-derivative completion of the NR heterotic action and determine its full set of symmetry transformations. A key outcome is the emergence of a gravitational SO(8) Green-Schwarz mechanism from the NR gauge transformation of the Kalb-Ramond field. This mechanism can be trivialized through suitable field redefinitions, in agreement with a previous analysis of this transformation. Our results establish a systematic framework for incorporating higher-curvature gravitational dynamics into NR string heterotic backgrounds.