Does strange matter evaporate in the early Universe\?

Details Does strange matter evaporate in the early Universe\? Does strange matter evaporate in the early Universe\?

Nov 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986phrvd..34.2947m&link_type=abstract

Physical Review D (Particles and Fields), Volume 34, Issue 10, 15 November 1986, pp.2947-2955

Physics

48

Particle-Theory And Field-Theory Models Of The Early Universe, Elementary Particle Processes

Scientific paper

Evaporation of nuggets of strange quark matter in the early Universe is investigated. A model of nugget evaporation is developed, and is shown to permit the survival of nuggets with initial baryon number A>~1046, when reabsorption of emitted hadrons is neglected. Reabsorption is shown to be potentially very important, making the survival of nuggets with a much lower initial baryon number possible. The evaporation rate of a nugget depends mainly on the effective binding energy of hadrons in a thin surface layer. This binding energy is shown to be several hundred MeV, determined by an equilibrium between emission of nucleons and kaons. A number of simplifying assumptions are explicitly discussed in order to stress the complicated physics involved. It is concluded that strange nuggets remain a possible candidate for the dark matter of the Universe.

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