4 papers · 1 filter
Inflation from Wrapped Branes
Melanie Becker, Louis Leblond, Sarah Shandera
We show that the use of higher dimensional wrapped branes can significantly extend the inflaton field range compared to brane inflation models which use D3-branes. We construct a s…
Runaway in the Landscape
Katrin Becker, Melanie Becker, Johannes Walcher
We consider flux compactifications of type IIB string theory on the mirror of a rigid Calabi-Yau. In special cases, these models are dual to the type IIA flux vacua with runaway di…
Moduli Space of Torsional Manifolds
Melanie Becker, Li-Sheng Tseng, Shing-Tung Yau
We characterize the geometric moduli of non-Kaehler manifolds with torsion. Heterotic supersymmetric flux compactifications require that the six-dimensional internal manifold be ba…
Non-Perturbative Approach to 2D-Supergravity and Super-Virasoro Constraints
Melanie Becker
The coupling of SCFT of type to two-dimensional supergravity can be formulated non-perturbatively in terms of a discrete super-eigenvalue model proposed by Alvarez-G…