D-Instanton effects in Type II and F-theory.pdf

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D-Instanton effects in Type II and F-theory

D-Instanton effects in Type II and F-theory M.C., J. Halverson, R. Richter, 0905.3379; 0909.4292; 0910.2239;! M.C., J. Halverson, P. Langacker, R. Richter, 1001.3148 ! (new twist on neutrino masses) II. Particle Physics implications (Type II): Systematic Study of Multi-Stack D-Brane Quivers (MSSM’s w/ realistic fermion textures) Employing non-perturbative effects: D-instanons Focus on: I. D-instantons in Type II (primarily IIA) and their lifts to global F-theory (effects on charged matter couplings) F-theory aspects: M.C., I. Garcia-Etxebbaria, R. Richter, 0911.0012 M.C., I. Garcia-Etxebbaria, J. Halverson, UPR-1216-T, about to appear! Outline iii. Particle physics implications Progress on local and global constructions Systematic local constructions of realistic MSSM’s I. Type II side: i. Model Building [w/ (intersecting) D-branes --brief summary] ii. Non-perturbative effects: D-instantons Focus on O(1) Instantons [aspects of U(1) instantons -time permitting] II. Instantons in F-theory: i. Lifting of zero modes for O(1) instantons ii. Examples of global constructions w/ O(1) instantons First supersymmetric 3-family Standard-like Models [M.C. , Shiu, Uranga ‘01]… (Type IIA side) intersecting D7- branes wrapping four-cycles in CY [in F-theory part of geometry of singular CY four-fold] promising local MSSM (E8 - intersection point) [Heckman ,Vafa et al.’09] ! global models? - early stages: GUT’s [Marsano, Saulina, Schaefer-Nemeki’09],! [Blumenhagen,Grimm,Jurke,Weigand’09]… c.f. talks by Schaefer-Nemeki, Saulina! Texas AM group’04-’08…! Just MSSM [Gmeiner,Honecker, 0806.3039]! intersecting D7- branes wrapping four-cycles in CY [in F-theory part of geometry of singular CY four-fold]

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