On the possibility of chaotic inflation from a softly-broken superconformal invariance

Details On the possibility of chaotic inflation from a softly-broken superconformal invariance On the possibility of chaotic inflation from a softly-broken superconformal invariance

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phlb..194..518p&link_type=abstract

Physics Letters B, Volume 194, Issue 4, p. 518-522.

Physics

2

Scientific paper

It has recently been suggested by Papantonopoulos, Uematsu and Yanagida that chaotic inflation can occur in a non-linear sigma model. The non-minimal coupling of the real part φ and the imaginary part ξ of a complex scalar field is supposed automatically to give the correct initial conditions for inflation, the potential for which is provided by a soft symmetry breaking term V = 1/2m2(ln φ)2. We show that the non-minimal coupling is not essential, but that fine tuning in the potential is, in the sense that m2<~2x10-10. We comment on the relevance of the model to superstring theory.

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