Generalized Bergshoeff-de Roo identification in the Supergravity frame
arXiv:2607.26415
The paper refines the Generalized Bergshoeff‑de Roo identification to produce higher‑derivative couplings directly in the standard supergravity framework, using diffeomorphism, Lorentz, gauge invariance and T‑duality within Double Field Theory.
Abstract
The effective action of string theory has a highly constrained structure due to the numerous symmetries of the underlying theory. Recently, a method known as the Generalized Bergshoeff-de Roo identification was developed, which exploits diffeomorphism, Lorentz and gauge invariance, along with T-duality, to derive higher-derivative couplings in the effective action within the framework of Double Field Theory. This method has been revisited and further refined to generate couplings directly within the standard Supergravity framework.
25 pages