Scale invariant extended inflation
Oct, 1990
35 pages
Published in:
- Phys.Rev.D 43 (1991) 3833-3845
Report number:
- CMU-HEP90-15,
- FERMILAB-PUB-90-218-A
Citations per year
Abstract: (APS)
We propose a model of extended inflation which makes use of the nonlinear realization of scale invariance involving the dilaton coupled to an inflaton field whose potential admits a metastable ground state. The resulting theory resembles the Jordan-Brans-Dicke version of extended inflation. However, quantum effects, in the form of the conformal anomaly, generate a mass for the dilaton, thus allowing our model to evade the problems of the original version of extended inflation. We show that extended inflation can occur for a wide range of inflaton potentials with no fine-tuning of dimensionless parameters required. Furthermore, we also find that it is quite natural for the extended-inflation period to be followed by an epoch of slow-rollover inflation as the dilaton settles down to the minimum of its induced potential.- inflation
- scaling: invariance
- symmetry: nonlinear
- postulated particle: dilaton
- mass: dilaton
- dilaton: mass
- anomaly: conformal
- dilaton: decay constant
- decay constant: dilaton
- field theory: scalar
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