# Possible cosmological implications of the quark-hadron phase transition

Borghini N, Cottingham WN, Mau RV (2000) *Journal of Physics G Nuclear and Particle Physics* 26(6): 771-785.

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We study the quark-hadron phase transition within an effective model of QCD, and find that in a reasonable range of the main parameters of the model, bodies with quark content between 10(-2) and 10 solar masses can have been formed in the early universe. In addition, we show that a significant amount of entropy is released during the transition. This may imply the existence of a higher baryon number density than is usually expected at temperatures above the QCD scale. The cosmological QCD transition may then provide a natural way of decreasing the high baryon asymmetry created by an Affleck-Dine-like mechanism down to the value required by primordial nucleosynthesis.

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Borghini N, Cottingham WN, Mau RV. Possible cosmological implications of the quark-hadron phase transition.

*Journal of Physics G Nuclear and Particle Physics*. 2000;26(6):771-785.Borghini, N., Cottingham, W. N., & Mau, R. V. (2000). Possible cosmological implications of the quark-hadron phase transition.

*Journal of Physics G Nuclear and Particle Physics*,*26*(6), 771-785. doi:10.1088/0954-3899/26/6/302Borghini, N., Cottingham, W. N., and Mau, R. V. (2000). Possible cosmological implications of the quark-hadron phase transition.

*Journal of Physics G Nuclear and Particle Physics*26, 771-785.Borghini, N., Cottingham, W.N., & Mau, R.V., 2000. Possible cosmological implications of the quark-hadron phase transition.

*Journal of Physics G Nuclear and Particle Physics*, 26(6), p 771-785. N. Borghini, W.N. Cottingham, and R.V. Mau, “Possible cosmological implications of the quark-hadron phase transition”,

*Journal of Physics G Nuclear and Particle Physics*, vol. 26, 2000, pp. 771-785. Borghini, N., Cottingham, W.N., Mau, R.V.: Possible cosmological implications of the quark-hadron phase transition. Journal of Physics G Nuclear and Particle Physics. 26, 771-785 (2000).

Borghini, Nicolas, Cottingham, WN, and Mau, RV. “Possible cosmological implications of the quark-hadron phase transition”.

*Journal of Physics G Nuclear and Particle Physics*26.6 (2000): 771-785.
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