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Primordial Black Holes and Cosmological Phase Transitions Report ...

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PBHs <strong>and</strong> <strong>Cosmological</strong> <strong>Phase</strong> <strong>Transitions</strong> 200<br />

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a Scenario 1<br />

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c Scenario 3<br />

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e Scenario 5<br />

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b Scenario 2<br />

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d Scenario 4<br />

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f Scenario 6<br />

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Figure 110: The fraction of the universe going into PBHs in a universe with<br />

a running–tilt power spectrum when n+ = 1.36 <strong>and</strong> t+ = 10 −7 s (see also<br />

Figure 109b <strong>and</strong> Table 48). The curves represent the contribution from the<br />

QCD phase transition (blue – Bag Model; magenta – Lattice Fit), from the EW<br />

phase transition (red – Bag Model), <strong>and</strong> from radiation (black). Also shown (top<br />

of figures, in maroon) are the observational constraints. Each Figure represents<br />

a different scenario (see Table 40 for the description of different scenarios):<br />

(a) Scenario 1; (b) Scenario 2; (c) Scenario 3; (d) Scenario 4; (e) Scenario 5;<br />

(f) Scenario 6. The contribution from the QCD Crossover (scenarios 3 <strong>and</strong> 6) is<br />

not shown because it is negligible. The contribution from the electron–positron<br />

annihilation is also negligible. Assembling these six Figures in a single one we<br />

recover Figure 109b.

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