A D-moduli problem?

Details A D-moduli problem? A D-moduli problem?

2000-01-20

arxiv.org/abs/hep-ph/0001219v1

Phys.Lett. B479 (2000) 308-314

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, full postscript also available from http://phyweb.lbl.gov/theorygroup/papers/44856.ps

Scientific paper

10.1016/S0370-2693(00)00336-1

We point out a generic problem in string-inspired supergravity models with an anomalous $U(1)_X$. A large number of matter multiplets charged under $U(1)_X$ remain massless above the supersymmetry-breaking scale because of degeneracy of vacua solving the D-flatness conditions. A toy model is analyzed as an illustration of the mechanism; we find the surprising result that many scalars remain massless after supersymmetry-breaking in a hidden sector.

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