Primordial Black Holes and Cosmological Phase Transitions Report ...

PBHs and Cosmological Phase Transitions 134
∆
∆
∆
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
a
∆1
E C
B
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
∆1
E C
B
0
0 0.2 0.4 0.6 0.8
∆
c
1 1.2 1.4
1
0
0 0.2 0.4 0.6 0.8 1 1.2 1.4
∆
Figure 58: PBH formation during the QCD transition according to the Bag
Model for the cases: (a) x =0.927, (b) x =0.6 and (c) x =0.308. 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
given in Figure 56 (they do not depend on the value of δc)
E
∆1