Properties of scalar perturbations generated by conformal scalar field

Details Properties of scalar perturbations generated by conformal scalar field Properties of scalar perturbations generated by conformal scalar field

2010-12-28

arxiv.org/abs/1012.5737v1

Physics

High Energy Physics

High Energy Physics - Theory

Prepared for "Gravity and Cosmology (GC2010)" workshop, Kyoto, Japan, May,24-July,16, 2010; 15 pages, 1 figure

Scientific paper

10.1143/PTPS.190.120

Primordial scalar perturbations may be generated when complex conformal scalar field rolls down its negative quartic potential. We begin with the discussion of peculiar infrared properties of this scenario. We then consider the statistical anisotropy inherent in the model. Finally, we discuss the non-Gaussianity of scalar perturbations. Because of symmetries, the bispectrum vanishes identically. We present a general expression for the trispectrum and give its explicit form in the folded limit.

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