Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2009-04-30
JHEP 0909:129,2009
Physics
High Energy Physics
High Energy Physics - Theory
42 pages
Scientific paper
10.1088/1126-6708/2009/09/129
We study normal functions capturing D-brane superpotentials on several one- and two-parameter Calabi-Yau hypersurfaces and complete intersections in weighted projective space. We calculate in the B-model and interpret the results using mirror symmetry in the large volume regime, albeit without identifying the precise A-model geometry in all cases. We identify new classes of extensions of Picard-Fuchs equations, as well as a novel type of topology changing phase transition involving quantum D-branes. A 4-d domain wall which is obtained in one region of closed string moduli space from wrapping a four-chain interpolating between two Lagrangian submanifolds is, for other values of the parameters, represented by a disk ending on a single Lagrangian.
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