Ricci flow, Courant algebroids, and renormalization of Poisson--Lie   T-duality
  We use a generalized Ricci tensor, defined for generalized metrics in Courant algebroids, to show that Poisson-Lie T-duality is compatible with the 1-loop renormalization group. 
Pavol \v{S}evera, Fridrich Valach
math.DG hep-th