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Entropy production in chemically nonequilibrium quark-gluon plasma created in central<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="normal">Pb</mml:mi><mml:mspace width="4pt" /><mml:mo>+</mml:mo><mml:mspace width="4pt" /><mml:mi mathvariant="normal">Pb</mml:mi></mml:math>collisions at energies available at the CERN Large Hadron Collider

Entropy production in chemically nonequilibrium quark-gluon plasma created in central<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi mathvariant="normal">Pb</mml:mi><mml:mspace width="4pt" /><mml:mo>+</mml:mo><mml:mspace width="4pt" /><mml:mi mathvariant="normal">Pb</mml:mi></mml:math>collisions at energies available at the CERN Large Hadron Collider

We study the possibility that partonic matter produced at an early stage of ultrarelativistic heavy-ion collisions is out of chemical equilibrium. It is assumed that initially this matter is mostly composed of gluons, but quarks and antiquarks are produced at later times. The dynamical evolution of partonic system is described …