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 2−3ρ0, where ρ0 is the nuclear matter saturation density. The uds matter becomes more stable than the electrically neutral ud matter at 3ρ0, but the udd matter is the most stable even at high density.