A Predictive Inflationary Scenario Without The Gauge Singlet

G. Lazarides; Q. Shafi

doi:10.1016/0370-2693(93)90595-9

paper

A Predictive Inflationary Scenario Without The Gauge Singlet

arXiv:hep-ph/9304247 · doi:10.1016/0370-2693(93)90595-9

Abstract

We propose a new realization of the chaotic inflationary scenario in which the scalar field responsible for inflation also spontaneously breaks the underlying gauge symmetry at a superheavy scale $\sim 1 0^{15} - 1 0^{17} G e V$ . A possible framework is provided by the superstring inspired gauge models, in which case several predictions are essentially model independent. The spectral index for the scalar perturbations $n ≃ 0.92 - 0.88$ , while the ratio of the tensor to the scalar quadrupole anisotropy is $(Δ T / T)_{T}^{2} / (Δ T / T)_{S}^{2} \approx 0.4 - 0.7$ . On smaller angular scales, $δ T / T (1^{\circ}) \approx (9 - 16) \times 1 0^{- 6}$ and $δ T / T (2. 1^{\circ}) \approx (6 - 10) \times 1 0^{- 6}$ . Implications for magnetic monopoles and cosmic strings as well as the gauge hierarchy problem are pointed out.

13 pages, BA-93-17

A Predictive Inflationary Scenario Without The Gauge Singlet

Abstract

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