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Proceedings of the U.S.-Polish Workshop on Physics from the Planck Scale to Electroweak Scale,
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Proceedings of the DESY Theory Workshop on Supersymmetry,, The fact that during inflation, fields generically have masses of order H has been noted by many authors. In the context of the Polonyi problem, it was noted by, In other contexts, this was noted by, 183, 163, O. Bertolami, G. Ross, Phys. Lett. B, E. Copeland, A. Liddle, D. Lyth, E. Stewart, D. Wands, Phys. Rev. D, 49, 6410, The relevance to the Polonyi problem and baryogenesis has been pointed out by, M. Dine, L. Randall, S. Thomas, 1994 (to be published); in, 1994 (to be published); and for the Polonyi problem by, G. Dvali, Report IFUP-TH 09-95, hep-ph 9503259 (to be published).
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(1984)
Phys. Lett.
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Dine, M.1
Fischler, W.2
Nemeschansky, D.3
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In principle, supersymmetry breaking can be transmitted to the flat directions by either renormalizable or nonrenormalizable interactions. However, the inflation is expected to have an expectation value of O(MP), and thus any field which couples to it through renormalizable interactions will have a large mass. When integrated out, these fields give rise to nonrenormalizable couplings of the type considered in the text.
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This can in fact be guaranteed by a discrete ZN R symmetry. Under such a symmetry, the superpotential transforms as W→e4πi/NW. If, for example, φ transforms as φ→φ, then no terms of the form φn are allowed. It is possible to forbid terms of the form χφn by symmetries as well;
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(1985)
Nucl. Phys.
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Dine, M.1
Seiberg, N.2
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ibid.
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(1983)
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Linde, A.1
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The Kahler potential might be tuned to give m2≪H2 but positive. In that case, large fluctuations can develop with a correlation length of order H-1e3H2/2m2 [c15 c17]. To be coherent over a scale that is large compared to the current horizon size requires (H/m)2≳40. However, if m2∼H2 after inflation, the field is driven toward the origin as a power law in time. So an entirely positive m2 scenario must fine tune the mass even after inflation.
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