94 citations · 451 across the 12 of their papers we have counts for
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Evidence for Tadpole Cancellation in the Topological String
Johannes Walcher
We study the topological string on compact Calabi-Yau threefolds in the presence of orientifolds and D-branes. In examples, we find that the total topological string amplitude admi…
D-branes and Normal Functions
David R. Morrison, Johannes Walcher
We explain the B-model origin of extended Picard-Fuchs equations satisfied by the D-brane superpotential on compact Calabi-Yau threefolds. Via the Abel-Jacobi map, the domainwall t…
Background Independence and the Open Topological String Wavefunction
Andrew Neitzke, Johannes Walcher
The open topological string partition function in the background of a D-brane on a Calabi-Yau threefold specifies a state in the Hilbert space associated with the quantization of t…
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…