新的质量标度下奇异夸克物质的电荷与临界密度

应用自恰的热力学方式确定夸克质量公式中的参数,并进一步证明,在新的质量标度下,适量的负电荷仍然可以降低奇异夸克物质的临界密度,从而有利于在重离子碰撞实验中寻找strangelets.当然,过量的负电荷仍将使味平衡成为不可能.

Charge Dependence of the Critical Density of Strange Quark Matter in a New Mass Scaling

One of our recent works demonstrates that the previous quark mass scaling should be modified, which has significantly changed the density behavior of the sound velocity in strange quark matter. In the present study, we provide a selfconsistent thermodynamic treatment to determine the parmeter in the mass formula, and prove that, under the new quark mass scaling, proper negative charges can still lower the critical density, and thus be favorable to the searches for strangelets in heavy ion experiments. Naturally, too much negative charges can still make it impossible to maintain flavor equilibrium.