TY - JOUR
T1 - MSSM curvaton in the gauge-mediated SUSY breaking
AU - Kasuya, S.
AU - Kawasaki, M.
AU - Takahashi, Fuminobu
PY - 2004/1/8
Y1 - 2004/1/8
N2 - 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.
AB - 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.
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U2 - 10.1016/j.physletb.2003.10.079
DO - 10.1016/j.physletb.2003.10.079
M3 - Article
AN - SCOPUS:0348046396
SN - 0370-2693
VL - 578
SP - 259
EP - 268
JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
IS - 3-4
ER -