MSSM curvaton in the gauge-mediated SUSY breaking

S. Kasuya, M. Kawasaki, Fuminobu Takahashi

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)


We study the curvaton scenario using the MSSM flat directions in the gauge-mediated SUSY breaking model. We find that the fluctuations in the both radial and phase directions can be responsible for the density perturbations in the universe through the curvaton mechanism. Although it has been considered difficult to have a successful curvaton scenario with the use of those flat directions, it is overcome by taking account of the finite temperature effects, which induce a negative thermal logarithmic term in the effective potential of the flat direction.

Original languageEnglish
Pages (from-to)259-268
Number of pages10
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
Publication statusPublished - 2004 Jan 8


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