Abstract
We study five-dimensional Kasner cosmologies in the vicinity of a conifold locus occurringin a time-dependent Calabi–Yau compactification of M-theory. The dynamics of M2-branewinding modes, which become light in this region, is taken into account using a suitablegauged supergravity action. We find cosmological solutions which interpolate between thetwo branches of the transition, establishing that conifold transitions can be realizeddynamically. However, generic solutions do not correspond to transitions, but to the modulibeing trapped close to the conifold locus. This effect results from an interplaybetween the scalar potential and Hubble friction. We show that the dynamicsdoes not depend on the details of the potential, but only on its overall shape.
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