Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Inflation in large N limit of supersymmetric gauge theories
AU - Jokinen, Asko
AU - Mazumdar, Anupam
N1 - 10 pages, LaTeX2e, misprints corrected, version accepted for publishing
PY - 2004/9/9
Y1 - 2004/9/9
N2 - Within supersymmetry we provide an example where the inflaton sector is derived from a gauge invariant polynomial of SU(N) or SO(N) gauge theory. Inflation in our model is driven by multi-flat directions, which assist accelerated expansion. We show that multi-flat directions can flatten the individual non-renormalizable potentials such that inflation can occur at sub-Planckian scales. We calculate the density perturbations and the spectral index, we find that the spectral index is closer to scale invariance for large N. In order to realize a successful cosmology we require large N of order, N~600.
AB - Within supersymmetry we provide an example where the inflaton sector is derived from a gauge invariant polynomial of SU(N) or SO(N) gauge theory. Inflation in our model is driven by multi-flat directions, which assist accelerated expansion. We show that multi-flat directions can flatten the individual non-renormalizable potentials such that inflation can occur at sub-Planckian scales. We calculate the density perturbations and the spectral index, we find that the spectral index is closer to scale invariance for large N. In order to realize a successful cosmology we require large N of order, N~600.
U2 - 10.1016/j.physletb.2004.07.010
DO - 10.1016/j.physletb.2004.07.010
M3 - Journal article
VL - 597
SP - 222
EP - 228
JO - Physics Letters B
JF - Physics Letters B
SN - 0370-2693
IS - 2
ER -