期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 7, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2018/07/032
关键词
inflation; physics of the early universe; primordial black holes
资金
- Swiss National Science Foundation (SNSF), project Investigating the Nature of Dark Matter [200020-159223]
- Cosmology group at the Departement de Physique Theorique at the Universite de Geneve
Primordial black holes as dark matter may be generated in single-field models of inflation thanks to the enhancement at small scales of the comoving curvature perturbation. This mechanism requires leaving the slow-roll phase to enter a non-attractor phase during which the inflaton travels across a plateau and its velocity drops down exponentially. We argue that quantum diffusion has a significant impact on the primordial black hole mass fraction making the classical standard prediction not trustable.
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