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- W3100794286 endingPage "031" @default.
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- W3100794286 abstract "We discuss the possibility of producing a significant fraction of dark matter in the form of primordial black holes in the context of the pre-big bang inflationary scenario. We take into account, to this purpose, the enhancement of curvature perturbations possibly induced by a variation of the sound-speed parameter $c_s$ during the string phase of high-curvature inflation. After imposing all relevant observational constraints, we find that the considered class of models is compatible with the production of a large amount of primordial black holes in the mass range relevant to dark matter, provided the sound-speed parameter is confined in a rather narrow range of values, $0.003 < c_s < 0.01$." @default.
- W3100794286 created "2020-11-23" @default.
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- W3100794286 date "2020-08-13" @default.
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- W3100794286 title "Primordial black holes from pre-big bang inflation" @default.
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- W3100794286 doi "https://doi.org/10.1088/1475-7516/2020/08/031" @default.
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