Inflation with Conformally Coupled Scalar Field

Physics

Scientific paper

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Scientific paper

In a Robertson-Walker geometry conformally coupled to a scalar field with inflation potential V(phiv) = M4 - (1/4)λphiv4, we investigate the classical evolution of a universe. The exact solutions in the model have been found. It is shown that in the region where the value of the phiv field is 0 < phiv < phivmax, (phivmax is the solution of V(phiv) = 0), there is inflation. This model can lead to successful inflation with λ ~ 10-9, rather than 10-13 as previously reported.

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