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Persson, D. och Volpato, R. (2015) *Fricke S-duality in CHL models*.

** BibTeX **

@article{

Persson2015,

author={Persson, Daniel and Volpato, R.},

title={Fricke S-duality in CHL models},

journal={Journal of High Energy Physics},

issn={1126-6708},

volume={2015},

issue={12},

pages={1-55},

abstract={© 2015, The Author(s). Abstract: We consider four dimensional CHL models with sixteen spacetime supersymmetries obtained from orbifolds of type IIA superstring on K3×T2 by a ℤN symmetry acting (possibly) non-geometrically on K3. We show that most of these models (in particular, for geometric symmetries) are self-dual under a weak-strong duality acting on the heterotic axio-dilaton modulus S by a “Fricke involution” S → −1/NS. This is a novel symmetry of CHL models that lies outside of the standard SL(2ℤ)-symmetry of the parent theory, heterotic strings on T6. For self-dual models this implies that the lattice of purely electric charges is N-modular, i.e. isometric to its dual up to a rescaling of its quadratic form by N. We verify this prediction by determining the lattices of electric and magnetic charges in all relevant examples. We also calculate certain BPS-saturated couplings and verify that they are invariant under the Fricke S-duality. For CHL models that are not self-dual, the strong coupling limit is dual to type IIA compactified on T6/ℤN, for some ℤN-symmetry preserving half of the spacetime supersymmetries.},

year={2015},

keywords={Extended Supersymmetry , Space-Time Symmetries , String Duality},

}

** RefWorks **

RT Journal Article

SR Electronic

ID 236250

A1 Persson, Daniel

A1 Volpato, R.

T1 Fricke S-duality in CHL models

YR 2015

JF Journal of High Energy Physics

SN 1126-6708

VO 2015

IS 12

SP 1

OP 55

AB © 2015, The Author(s). Abstract: We consider four dimensional CHL models with sixteen spacetime supersymmetries obtained from orbifolds of type IIA superstring on K3×T2 by a ℤN symmetry acting (possibly) non-geometrically on K3. We show that most of these models (in particular, for geometric symmetries) are self-dual under a weak-strong duality acting on the heterotic axio-dilaton modulus S by a “Fricke involution” S → −1/NS. This is a novel symmetry of CHL models that lies outside of the standard SL(2ℤ)-symmetry of the parent theory, heterotic strings on T6. For self-dual models this implies that the lattice of purely electric charges is N-modular, i.e. isometric to its dual up to a rescaling of its quadratic form by N. We verify this prediction by determining the lattices of electric and magnetic charges in all relevant examples. We also calculate certain BPS-saturated couplings and verify that they are invariant under the Fricke S-duality. For CHL models that are not self-dual, the strong coupling limit is dual to type IIA compactified on T6/ℤN, for some ℤN-symmetry preserving half of the spacetime supersymmetries.

LA eng

DO 10.1007/JHEP12(2015)156

LK http://dx.doi.org/10.1007/JHEP12(2015)156

OL 30