Although the hybrid natural inflation is a successful inflation model, the symmetry breaking scale in the model should be large for a negative value of the running of the scalar spectral index. This study proposed a generalized hybrid natural inflation model that can realize a low-scale inflation with a negative value of the running of the scalar spectral index.
机构:
Tokyo Inst Technol, Dept Phys, Tokyo 1528551, JapanDeutsch Elektronen Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany
Yamaguchi, Masahide
Yokoyama, Jun'ichi
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机构:
Univ Tokyo, Grad Sch Sci, Res Ctr Early Universe RESCEU, Tokyo 1130033, Japan
Univ Tokyo, Kavli Inst Phys & Math, Universe IPMU, Kashiwa, Chiba 2778568, JapanDeutsch Elektronen Synchrotron DESY, Notkestr 85, D-22607 Hamburg, Germany