The generalized Bergshoeff-de Roo identification

Duality covariant field redefinitions

“…In this paper we propose a map for g mn and φ in terms of duality multiplets of the 2parameter deformation of DFT introduced at O(α ′ ) in [5] and extended to all order in [10]- [11]. This proposal was successfully contrasted with previous results up to O(α ′2 ).…”

“…In this section we will briefly review the GBdRi, for an extended discussion we recommend the reader to visit the papers [10] and [11].…”

“…A technique was proposed recently [10]- [11] that combines both Lorentz and T-duality, it presumably allows one to get information on (certain) higher derivatives corrections to the effective actions of string theory in an iterative way. This approach is based on symmetry arguments and not on first principle grounds, but so far all the outcomes are self-consistent and agree with scattering amplitudes, at least up to O(α ′2 ).…”

“…A proposal to resolve this obstacle was presented in [10], where a generalization of the GGS transformation was suggested for the monoparametric case that exactly closes at all order in derivatives. The prescription from which the perturbative GGS are obtained has its origin on what is was dubbed the Generalized Bergshoeff-deRoo identification (GBdRi).…”

Are nonperturbative AdS vacua possible in bosonic string theory?

“…As for the yet unknown higher-order α ′ corrections, some important progress has been made recently using the formalism of double field theory [12,13,14,15,16,17]. Remarkably, in Ref.…”