Journal
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Volume -, Issue 9, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2009/09/030
Keywords
alternatives to inflation; power spectrum; cosmological perturbation theory
Funding
- Russian Foundation for Basic Research [08-02-00473]
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We show that flat spectrum of small perturbations of field(s) is generated in a simpleway in a theory of multi-component scalar field provided this theory is conformally invariant, it has some global symmetry and the quartic potential is negative. We suggest a mechanism of converting these field perturbations into adiabatic scalar perturbations with flat spectrum.
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