Primordial Black Holes and Cosmological Phase Transitions Report ...

PBHs and Cosmological Phase Transitions 137
∆
∆
∆
1.4
1.2
1
0.8
0.6
0.4
0.2
1.4
1.2
0.8
0.6
0.4
0.2
F
E
a
∆1
0
0 0.2 0.4 0.6 0.8
∆
b
1 1.2 1.4
1
1.4
1.2
0.8
0.6
0.4
0.2
F
E
∆1
0
0 0.2 0.4 0.6 0.8
∆
c
1 1.2 1.4
1
0
F
∆1
0 0.2 0.4 0.6 0.8 1 1.2 1.4
∆
Figure 61: PBH formation during the QCD transition according to the Bag
Model for the cases: (a) x =0.26, (b) x =0.22 and (c) x =0.11. The solid
curve corresponds to the function (1 − f)δc with, from bottom to top, δc =1/3,
δc =0.4, δc =0.5, δc =0.6 and δc =0.7. The dashed curve corresponds to the
identity δ. The values of the borders between different classes are the same as
given in Figure 60 (they do not depend on the value of δc).