Carrollian bosonic supergravity at order $α'$ and the universal cancellation of higher-curvature divergences
Year: 2026
Type: preprint
Abstract: We prove that the Carrollian limit of bosonic supergravity remains finite after including the four-derivative terms arising from the $α'$-corrections, and we explicitly construct the effective action. We also establish a universal criterion to determine the finiteness of higher-curvature contributions given by powers of the Riemann tensor, ${\rm Riem}_1 \cdots {\rm Riem}_N$, with $N>1$. As applications of this criterion, we prove that the purely gravitational $α'^2$- and $α'^3$-corrections admit a finite Carrollian limit, derive their explicit contributions to the action, and show that the terms proportional to $ζ(3)$ do not contribute to the Carrollian bosonic supergravity at order $α'^3$.
Source: arXiv (Cornell University)
Author: Lescano, Eric
Institution: University of Wrocław
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7171718787