The α′2 correction from double field theory

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Authors	HRONEK Stanislav WULFF Linus ZACARIAS NICASIO Salomon Gabriel
Year of publication	2022
Type	Article in Periodical
Magazine / Source	Journal of High Energy Physics
MU Faculty or unit	Faculty of Science
Citation
Web	https://arxiv.org/pdf/2206.10640.pdf https://doi.org/10.1007/JHEP11(2022)090
Doi	http://dx.doi.org/10.1007/JHEP11(2022)090
Keywords	Bosonic Strings; Gauge Symmetry; String Duality; Superstrings and Heterotic Strings
Description	It is known that the order ?' correction to the tree-level effective action for the bosonic and heterotic string can be described in the framework of Double Field Theory (DFT). Here we determine the DFT action and transformations at order ?'2 by a direct calculation. The result is vastly simpler than previous proposals. We show that this correction reproduces the known ?'2 correction to the heterotic string effective action. The relation of our action to an (implicit) all order proposal coming from the so-called generalized Bergshoeff-de Roo identification is also discussed.
Related projects:	Integrable deformations Interní grantová agentura Masarykovy univerzity