Heterotic strings on homogeneous spaces

Dan Israel (1) , Costas Kounnas (1) , Domenico Orlando (2) , P. Marios Petropoulos (2)

1 LPTENS - Laboratoire de Physique Théorique de l'ENS [École Normale Supérieure]
2 CPHT - Centre de Physique Théorique [Palaiseau]

We construct heterotic string backgrounds corresponding to families of homogeneous spaces as exact conformal field theories. They contain left cosets of compact groups by their maximal tori supported by NS-NS 2-forms and gauge field fluxes. We give the general formalism and modular-invariant partition functions, then we consider some examples such as SU(2)/U(1) ~ S^2 (already described in a previous paper) and the SU(3)/U(1)^2 flag space. As an application we construct new supersymmetric string vacua with magnetic fluxes and a linear dilaton.

Domaines: Physique des Hautes Energies - Théorie [hep-th]

Dan Israel, Costas Kounnas, Domenico Orlando, P. Marios Petropoulos. Heterotic strings on homogeneous spaces. Fortschritte der Physik / Progress of Physics, 2005, 53, pp.1030-1071. ⟨hal-00284878⟩