The order of the quantum chromodynamics transition predicted by the standard model of particle physics

Y. Aoki, G. Endrődi, Z. Fodor, S. D. Katz () and K. K. Szabó
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Y. Aoki: University of Wuppertal
G. Endrődi: Eötvös University
Z. Fodor: University of Wuppertal
S. D. Katz: University of Wuppertal
K. K. Szabó: University of Wuppertal

Nature, 2006, vol. 443, issue 7112, 675-678

Abstract: A universal transition The standard model of particle physics predicts two phase transitions that are relevant for the evolution of the early Universe. One, the quantum chromodynamics transition, involves the strong force that binds quarks into protons and neutrons. Despite much theoretical effort, the nature of this transition remains ambiguous. Now Aoki et al. report computationally demanding calculations that suggest that there was no true phase transition. Instead, an analytic crossover took place, involving a rapid, continuous change with temperature as opposed to a jump. This means that it will be difficult to find experimental evidence of a transition from astronomical observations.

Date: 2006
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DOI: 10.1038/nature05120

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