Marcus Berg (Karlstad University)
I will give some introduction to the general topic of string effective
actions in orientifolds with D-branes, and discuss the evaluation of
string one-loop contributions to the Kähler metric of closed string
moduli in toroidal minimally supersymmetric (Calabi-Yau) orientifolds
with D-branes. The focus is on poorly understood N = 1 contributions
that a priori receive contributions from all massive string states.