String theory at order α′ 2 and the generalized Bergshoeff-de Roo identification

Journal of High Energy Physics

Linus Wulff¹  Stanislav Hronek¹ 

[1] Department of Theoretical Physics and Astrophysics, Faculty of Science, Masaryk University;

关键词: Bosonic Strings;    Global Symmetries;    String Duality;    Superstrings and Heterotic Strings;   

DOI  :  10.1007/JHEP11(2021)186

来源: DOAJ

【 摘 要 】

Abstract It has been shown by Marques and Nunez that the first α′-correction to the bosonic and heterotic string can be captured in the O(D, D) covariant formalism of Double Field Theory via a certain two-parameter deformation of the double Lorentz transformations. This deformation in turn leads to an infinite tower of α′-corrections and it has been suggested that they can be captured by a generalization of the Bergshoeff-de Roo identification between Lorentz and gauge degrees of freedom in an extended DFT formalism. Here we provide strong evidence that this indeed gives the correct α′ 2-corrections to the bosonic and heterotic string by showing that it leads to a cubic Riemann term for the former but not for the latter, in agreement with the known structure of these corrections including the coefficient of Riemann cubed.

【 授权许可】

Unknown