Strange matter lumps in the early Universe

Details Strange matter lumps in the early Universe Strange matter lumps in the early Universe

Oct 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994phrvd..50.4771c&link_type=abstract

Physical Review D (Particles, Fields, Gravitation, and Cosmology), Volume 50, Issue 8, 15 October 1994, pp.4771-4780

Physics

4

Neutron Stars, Quark-Gluon Plasma, Nuclear Matter

Scientific paper

We study the stability of hot strange matter lumps formed in the early Universe. As the Universe cools below the hadronization temperature, these lumps normally become unstable against boiling. They can stabilize themselves against this process if their mass is sufficiently large to hold a hadronic crust by gravitational attraction. Our analysis improves on previous studies of the internal structure of such stable hot quark matter lumps with hadronic crust by correctly treating the constraints from chemical equilibrium of baryonic and electric charge between crust and core. Since the expansion rate of the early Universe is much faster than the cooling rate of the strange matter lumps, their internal structure is characterized by constant entropy per baryon. Our improved analysis confirms the earlier finding that such stable quark matter lumps require a mass well above the total mass inside the horizon.

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