Mathematics – Logic
Scientific paper
Aug 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976ncimb..34..245d&link_type=abstract
Nuovo Cimento, Sezione B, vol. 34 B, Aug. 11, 1976, p. 245-255.
Mathematics
Logic
Brightness Temperature, Cosmic Rays, Cosmology, Hadrons, Microwaves, Particle Energy, Universe, Background Radiation, Particle Density (Concentration), Particle Production, Pions, Relativity
Scientific paper
A Friedmann cosmological model with a finite ultimate temperature that is a direct consequence of strong interactions is constructed. It is noted that this temperature may be interpreted as the 'boiling point' of hadronic matter in that the addition of more energy to the matter would not increase its temperature above this value, but rather would increase the number of hadrons in the expanding fireball through particle creation. The temperature of the cosmic microwave background is calculated in the framework of the present model, and a possible link is examined between the cosmic-expansion law and the hadronic-level density. The numerical result of the microwave-temperature calculation is found to be similar to those for the Hagedorn (1970) and Frautschi (1971) statistical-bootstrap models, both of which clearly favor a low matter density over a high density. It is suggested that hot dense hadronic matter in thermal contact with radiation in the early Universe facilitated the development of an open Universe today
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