Stability and structure of quark matter in a molecular dynamics framework

We study stability and structure of quark matters as a function of density in a framework of molecular dynamics (MD). Using appropriate effective interactions and the frictional cooling method, we search for the minimum energy of the system. Transition from confined to deconfined phase is observed at densities of 2 -- 3$ρ_0$, where $ρ_0$ is the nuclear matter saturation density. The $uds$ matter becomes more stable than the charge-neutral $ud$ matter at 3$ρ_0$, but the $udd$ matter is the most stable even at high density.

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