Non-Gaussianity from Compositeness

Details Non-Gaussianity from Compositeness Non-Gaussianity from Compositeness

2010-10-21

arxiv.org/abs/1010.4395v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

7 pages,1 figure

Scientific paper

By assuming the field seeding the curvature perturbations $ \zeta $ is a dynamically arising condensate, we are able to derive the relation $ f_{NL} ^2 \simeq 10^8 H / M_c $ between the non-Gaussianity parameter $ f_{NL} $ and the ratio of the inflationary scale $ H $ to the cutoff scale $ M_c $ of the effective theory describing the condensate, thus relating the experimental bound on $ f_{NL} $ to a bound on $ M_c $.

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