Summary
A new approach is advanced for treating quark systems. The approach considers all possible quark states: unbound (quasi-free) quarks and strongly bound (confined)n-quark hadron clusters with arbitraryn, satisfying selection rules. All admissible reactions of decay and fusion among multiquarks and between the latter and quasi-free quarks are taken into account. The behaviour of the quark-hadron matter on the temperature-density plane is studied. The deconfinement of quarks is found to be rather a continuous process than an abrupt transition.
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Yukalov, V.I., Kadantseva, E.P. & Shanenko, A.A. Thermodynamics of quark-hadron matter. Nuov Cim A 105, 371–386 (1992). https://doi.org/10.1007/BF02730641
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DOI: https://doi.org/10.1007/BF02730641