ar X iv : h ep - t h / 05 06 19 5 v 1 2 3 Ju n 20 05 Geometric transitions and mixed Hodge structures

ar X iv : h ep - t h / 05 06 19 6 v 1 2 3 Ju n 20 05 Geometric transitions and integrable systems

We consider B-model large N duality for a new class of noncompact Calabi-Yau spaces modeled on the neighborhood of a ruled surface in a Calabi-Yau threefold. The closed string side of the transition is governed at genus zero by an A1 Hitchin integrable system on a genus g Riemann surface Σ. The open string side is described by a holomorphic Chern-Simons theory which reduces to a generalized mat...

ar X iv : h ep - t h / 05 06 19 7 v 1 2 3 Ju n 20 05 The emergence of noncommutative target space in noncritical string theory Jan

We show how a noncommutative phase space appears in a natural way in noncritical string theory, the noncommutative deformation parameter being the string coupling.

ar X iv : h ep - t h / 05 06 19 6 v 2 2 8 Ju n 20 05 Geometric transitions and integrable systems

We consider B-model large N duality for a new class of noncompact Calabi-Yau spaces modeled on the neighborhood of a ruled surface in a Calabi-Yau threefold. The closed string side of the transition is governed at genus zero by an A1 Hitchin integrable system on a genus g Riemann surface Σ. The open string side is described by a holomorphic Chern-Simons theory which reduces to a generalized mat...

ar X iv : h ep - t h / 05 06 19 7 v 2 2 4 Ju n 20 05 The emergence of noncommutative target space in noncritical string theory

We show how a noncommutative phase space appears in a natural way in noncritical string theory, the noncommutative deformation parameter being the string coupling.

ar X iv : h ep - p h / 05 06 11 1 v 2 1 4 Ju n 20 05 Transverse positron polarization in the μ + → e + ν̄ μ ν e decay in