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D-instanton and polyinstanton effects from type I' D0-brane loops

Christoffer Petersson (Institutionen för fundamental fysik, Matematisk fysik) ; P. Soler ; A. M. Uranga
Journal of High Energy Physics (1126-6708). 6, (2010)
[Artikel, refereegranskad vetenskaplig]

We study non-perturbative D(-1)-instanton corrections to quartic gauge and curvature couplings in 8d type IIB orientifolds, in terms of a one-loop computation of BPS D0-branes in T-dual type I' models. The complete perturbative and non-perturbative results are determined by the BPS multiplicities of perturbative open strings and D0-brane bound states in the 9d type I' theory. Its modular properties admit a geometric interpretation by lifting to Horava-Witten theory. We use the type I' viewpoint to motivate an interpretation of 8d and 4d polyinstanton effects, consistent with heterotic - type II orientifold duality.

Nyckelord: D-branes, Nonperturbative Effects, String Duality, d-brane instantons, threshold corrections, string theory, 6 dimensions, orientifolds, duality, n=2, compactifications, couplings, dynamics

Denna post skapades 2010-07-26. Senast ändrad 2011-04-12.
CPL Pubid: 123950


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Institutionen för fundamental fysik, Matematisk fysik (2005-2013)



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D-instantons and Dualities in String Theory