Publication details

The α′2 correction from double field theory

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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

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.
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