Harrison--Zeldovich spectrum from conformal invariance

Details Harrison--Zeldovich spectrum from conformal invariance Harrison--Zeldovich spectrum from conformal invariance

2009-06-19

arxiv.org/abs/0906.3693v1

JCAP 0909:030,2009

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, 1 figure

Scientific paper

10.1088/1475-7516/2009/09/030

We show that flat spectrum of small perturbations of field(s) is generated in
a simple way 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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