Topological Strings and (Almost) Modular Forms

dc.creatorAganagic, Mina
dc.creatorBouchard, Vincent
dc.creatorKlemm, Albrecht
dc.date2006-07-17
dc.date2007-05-04
dc.date.accessioned2026-07-07T11:27:32Z
dc.date.available2026-07-07T11:27:32Z
dc.descriptionThe B-model topological string theory on a Calabi-Yau threefold X has a symmetry group Gamma, generated by monodromies of the periods of X. This acts on the topological string wave function in a natural way, governed by the quantum mechanics of the phase space H^3(X). We show that, depending on the choice of polarization, the genus g topological string amplitude is either a holomorphic quasi-modular form or an almost holomorphic modular form of weight 0 under Gamma. Moreover, at each genus, certain combinations of genus g amplitudes are both modular and holomorphic. We illustrate this for the local Calabi-Yau manifolds giving rise to Seiberg-Witten gauge theories in four dimensions and local P_2 and P_1 x P_1. As a byproduct, we also obtain a simple way of relating the topological string amplitudes near different points in the moduli space, which we use to give predictions for Gromov-Witten invariants of the orbifold C^3/Z_3.
dc.description62 pages, 1 figure; v2: minor corrections
dc.identifierhttps://arxiv.org/abs/hep-th/0607100
dc.identifierhttp://arxiv.org/abs/hep-th/0607100
dc.identifierCommun.Math.Phys.277:771-819,2008
dc.identifierdoi:10.1007/s00220-007-0383-3
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/196176
dc.subjectHigh Energy Physics - Theory
dc.subjectAlgebraic Geometry
dc.subjectNumber Theory
dc.titleTopological Strings and (Almost) Modular Forms
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