String theory at order ${\alpha }^{\prime 2}$ and the generalized Bergshoeff-de Roo identification

Stanislav Hronek, Linus Wulff

It has been shown by Marques and Nunez that the first ${\alpha }^{\prime }$-correction to the bosonic and heterotic string can be captured in the $O(D,D)$ covariant formalism of Double Field Theory…