Gravitational waves propagating through an oscillatory scalar condensate of metric origin acquire a modified, Whittaker-function profile and a non-standard dispersion relation, carrying an imprint of the alpha R squared curvature term.
Condensate cosmology in O'Raifeartaigh models
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abstract
Flat directions charged under an R-symmetry are a generic feature of O'Raifeartaigh models. Non-topological solitons associated with this symmetry, R-balls, are likely to form through the fragmentation of a condensate, itself created by soft terms induced during inflation. In gravity mediated SUSY breaking R-balls decay to gravitinos, reheating the universe. For gauge mediation R-balls can provide a good dark matter candidate. Alternatively they can decay, either reheating or cooling the universe. Conserved R-symmetry permits decay to gravitinos or gauginos, whereas spontaneously broken R-symmetry results in decay to visible sector gauge bosons.
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Gravitational Wave Propagation in a Geometric Condensate in Starobinsky Cosmology
Gravitational waves propagating through an oscillatory scalar condensate of metric origin acquire a modified, Whittaker-function profile and a non-standard dispersion relation, carrying an imprint of the alpha R squared curvature term.