Invariant Solutions to the Strominger System on Complex Lie Groups and   Their Quotients
  Using canonical 1-parameter family of Hermitian connections on the tangent bundle, we provide invariant solutions to the Strominger system on complex Lie groups. Both flat and non-flat cases are discussed in detail. 
Teng Fei and Shing-Tung Yau
math-ph hep-th math.DG math.MP