2003/05/07 by Marieke Postma, Postma, Marieke
Physics and Astronomy · #Astrophysics (astro-ph) #FOS: Physical sciences #astro-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/0305101
6 pages, 2 figures. Talk presented at the XXXVIIIth Rencontres de Moriond on ElectroWeak Interactions and Unified Theories, Les Arcs, France, March 15th-22nd 2003
arxiv created 2003/05/12 · arxiv updated 2009/12/01
We analyse the curvaton scenario in the context of supersymmetry. Supersymmetric theories contain many scalars, and therefore many curvaton candidates. To obtain a scale invariant perturbation spectrum, the curvaton mass should be small during inflation m ≪ H. This can be achieved by invoking symmetries, which suppress the soft masses and non-renormalizable terms in the potential. Other model-independent constraints on the curvaton model come from nucleosynthesis, gravitino overproduction, and thermal damping. The curvaton can work for masses m \gtrsim 104 \GeV, and very small couplings (e.g. h \lesssim 10-6 for m \lesssim 108 \GeV).