Primordial nuggets survival and QCD pairing

Abstract

We revisit the problem of boiling and surface evaporation of quark nuggets in the cosmological quark-hadron transition with the explicit consideration of pairing between quarks in a color-flavor locked (CFL) state. Assuming that primordial quark nuggets are actually formed, we analyze the consequences of pairing on the rates of boiling and surface evaporation in order to determine whether they could have survived with substantial mass. We find a substantial quenching of the evaporation + boiling processes, which suggests the survival of primordial nuggets for the currently considered range of the pairing gap $\Delta$. Boiling is shown to depend on the competition of an increased stability window and the suppression of the rate, and is not likely to dominate the destruction of the nuggets. If surface evaporation dominates, the fate of the nuggets depend on the features of the initial mass spectrum of the nuggets, their evaporation rate, and the value of the pairing gap, as shown and discussed in the text.

arXiv comment6 pages, 4 figures

References in corpus (6)

• Lattice determination of the critical point of QCD at finite T and μ
• Color-flavor locked strange matter
• Lattice QCD Results at Finite Temperature and Density
• Relics of the Cosmological QCD Phase Transition
• Recent lattice results relevant for heavy ion collisions
• Baryon Number Transport in a Cosmic QCD-Phase Transition

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