Phys. Rev. D 52, 5659–5664 (1995)Probability for primordial black holesReceived 28 June 1995; published in the issue dated 15 November 1995 We consider two quantum cosmological models with a massive scalar field: an ordinary Friedmann universe and a universe containing primordial black holes. For both models we discuss the complex solutions to the Euclidean Einstein equations. Using the probability measure obtained from the Hartle-Hawking no-boundary proposal we find that the only unsuppressed black holes start at the Planck size but can grow with the horizon scale during the roll down of the scalar field to the minimum. © 1995 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevD.52.5659
DOI:
10.1103/PhysRevD.52.5659
PACS:
98.80.Hw, 04.60.Kz, 04.70.Dy, 98.80.Bp
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