Abstract: (arXiv)
We study the dimensional reduction of the N=1{\cal N}=1, ten-dimensional Heterotic Supergravity to four dimensions, at leading order in α\alpha', when the internal space is a coset manifold. Then we apply the formalism using as internal manifolds all possible six-dimensional non-symmetric coset spaces, namely G2/SU(3),Sp4/(SU(2)×U(1))nonmaxG_2/SU(3),Sp_4/(SU(2)\times U(1))_{non-max} and SU(3)/U(1)×U(1)SU(3)/U(1)\times U(1), which moreover are nearly-K\'{a}hler manifolds and preserve the supersymmetric spectrum. In these cases we determine the effective actions which turn out to describe N=1{\cal N}=1 four-dimensional supergravities of the no-scale type.
  • supergravity: heterotic
  • coset space: Kaehler
  • effective action
  • supersymmetry: 1
  • dimensional reduction
  • dimension: 10
  • dimension: 4
  • vacuum state