Running-Mass Inflation Model and Primordial Black Holes

Details Running-Mass Inflation Model and Primordial Black Holes Running-Mass Inflation Model and Primordial Black Holes

2011-02-11

arxiv.org/abs/1102.2340v3

JCAP 1104:005,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

22 pages, 6 figures, Refs. added, Published in JCAP

Scientific paper

10.1088/1475-7516/2011/04/005

We revisit the question whether the running-mass inflation model allows the formation of Primordial Black Holes (PBHs) that are sufficiently long-lived to serve as candidates for Dark Matter. We incorporate recent cosmological data, including the WMAP 7-year results. Moreover, we include "the running of the running" of the spectral index of the power spectrum, as well as the renormalization group "running of the running" of the inflaton mass term. Our analysis indicates that formation of sufficiently heavy, and hence long-lived, PBHs still remains possible in this scenario. As a by-product, we show that the additional term in the inflaton potential still does not allow significant negative running of the spectral index.

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