Computer Science – Sound
Scientific paper
Nov 1975
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975phrvd..12.2949c&link_type=abstract
Physical Review D (Particles and Fields), Volume 12, Issue 10, 15 November 1975, pp.2949-2954
Computer Science
Sound
7
Scientific paper
The implications for hadron physics of astrophysical observations relating to primordial black holes are discussed. If one assumes that fluctuations in the space-time metric at very early times were scale invariant then the speed of sound in the primordial fireball must exceed 0.01c at times earlier than 10-12 sec, as a consequence of observational limits on primordial black holes. This suggests that superbaryons probably do not exist. It is further shown that black holes with masses < 1025 g are unlikely to exist in nature unless either the spectrum of density fluctuations or the equation of state of dense hadronic matter behave in a rather special way.
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