The Axion Mass in Modular Invariant Supergravity

Details The Axion Mass in Modular Invariant Supergravity The Axion Mass in Modular Invariant Supergravity

2005-02-10

arxiv.org/abs/hep-th/0502100v1

Phys.Lett. B612 (2005) 304-310

Physics

High Energy Physics

High Energy Physics - Theory

10 pages

Scientific paper

10.1016/j.physletb.2005.03.024

When supersymmetry is broken by condensates with a single condensing gauge group, there is a nonanomalous R-symmetry that prevents the universal axion from acquiring a mass. It has been argued that, in the context of supergravity, higher dimension operators will break this symmetry and may generate an axion mass too large to allow the identification of the universal axion with the QCD axion. We show that such contributions to the axion mass are highly suppressed in a class of models where the effective Lagrangian for gaugino and matter condensation respects modular invariance (T-duality).

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