String instantons, fluxes and moduli stabilization

P. G. Cámara; E. Dudas; T. Maillard; G. Pradisi

doi:10.1016/j.nuclphysb.2007.11.026

String instantons, fluxes and moduli stabilization

P. G. Cámara
, E. Dudas
, T. Maillard
, G. Pradisi

Research output: Contribution to journal › Article › peer-review

Abstract

We analyze a class of dual pairs of heterotic and type I models based on freely-acting Z₂ × Z₂ orbifolds in four dimensions. Using the adiabatic argument, it is possible to calculate non-perturbative contributions to the gauge coupling threshold corrections on the type I side by exploiting perturbative calculations on the heterotic side, without the drawbacks due to twisted moduli. The instanton effects can then be combined with closed-string fluxes to stabilize most of the moduli fields of the internal manifold, and also the dilaton, in a racetrack realization of the type I model.

Original language	English
Pages (from-to)	453-489
Number of pages	37
Journal	Nuclear Physics B
Volume	795
Issue number	1-2
DOIs	https://doi.org/10.1016/j.nuclphysb.2007.11.026
Publication status	Published - 21 May 2008

Keywords

Flux compactifications
S-duality
String instantons

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10.1016/j.nuclphysb.2007.11.026

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AU - Cámara, P. G.

AU - Dudas, E.

AU - Maillard, T.

AU - Pradisi, G.

PY - 2008/5/21

Y1 - 2008/5/21

N2 - We analyze a class of dual pairs of heterotic and type I models based on freely-acting Z2 × Z2 orbifolds in four dimensions. Using the adiabatic argument, it is possible to calculate non-perturbative contributions to the gauge coupling threshold corrections on the type I side by exploiting perturbative calculations on the heterotic side, without the drawbacks due to twisted moduli. The instanton effects can then be combined with closed-string fluxes to stabilize most of the moduli fields of the internal manifold, and also the dilaton, in a racetrack realization of the type I model.

AB - We analyze a class of dual pairs of heterotic and type I models based on freely-acting Z2 × Z2 orbifolds in four dimensions. Using the adiabatic argument, it is possible to calculate non-perturbative contributions to the gauge coupling threshold corrections on the type I side by exploiting perturbative calculations on the heterotic side, without the drawbacks due to twisted moduli. The instanton effects can then be combined with closed-string fluxes to stabilize most of the moduli fields of the internal manifold, and also the dilaton, in a racetrack realization of the type I model.

KW - Flux compactifications

KW - S-duality

KW - String instantons

UR - https://www.scopus.com/pages/publications/39149114068

U2 - 10.1016/j.nuclphysb.2007.11.026

DO - 10.1016/j.nuclphysb.2007.11.026

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VL - 795

SP - 453

EP - 489

JO - Nuclear Physics B

JF - Nuclear Physics B

IS - 1-2

ER -

String instantons, fluxes and moduli stabilization

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Keywords

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