TY - JOUR
T1 - Large scale structure and supersymmetric inflation without fine tuning
AU - Dvali, G.
AU - Shafi, Q.
AU - Schaefer, R.
PY - 1994
Y1 - 1994
N2 - We explore constraints on the spectral index n of density fluctuations and the neutrino energy density fraction Ων from observations of large scale structure. The best fits imply n1 and Ων0.1-0.3, for Hubble constants 40-60 km s-1 Mpc-1. We present a new class of inflationary models based on realistic supersymmetric grand unified theories (GUTs) which do not have the usual "fine tuning" problems. The amplitude of primordial density fluctuations is found to be (MXMP)2, where MX (MP) denote the GUT (Planck) scale. The spectral index n=0.98, in excellent agreement with the observations.
AB - We explore constraints on the spectral index n of density fluctuations and the neutrino energy density fraction Ων from observations of large scale structure. The best fits imply n1 and Ων0.1-0.3, for Hubble constants 40-60 km s-1 Mpc-1. We present a new class of inflationary models based on realistic supersymmetric grand unified theories (GUTs) which do not have the usual "fine tuning" problems. The amplitude of primordial density fluctuations is found to be (MXMP)2, where MX (MP) denote the GUT (Planck) scale. The spectral index n=0.98, in excellent agreement with the observations.
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U2 - 10.1103/PhysRevLett.73.1886
DO - 10.1103/PhysRevLett.73.1886
M3 - Article
AN - SCOPUS:3442882089
VL - 73
SP - 1886
EP - 1889
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 14
ER -