Moduli fixing and T-duality in Type II brane gas models

Understand

We consider a compactification with a six-dimensional torus in the type II brane gas models.

• We show that the dilaton and the scale of each cycle of the internal space are fixed in the presence of NS5-brane and Kaluza-Klein monopoles as well as D-branes with the gauge fields.
• We can construct various models that lead to fixed moduli by using T-duality transformations.