Spinodal instability of baryon-rich quark matter

[摘要] The spinodal instabilities of both confined and expanding baryon-rich quark matters are studied in a transport model derived from the Nambu-Jona-Lasino model. Appreciable higher-order density moments are seen as a result of the first-order phase transition in both cases. The skewness of the quark number event-by-event distribution in a small subvolume of the system becomes appreciable for the confined quark matter. For the expanding quark matter, the density fluctuations lead to enhanced anisotropic flows and dilepton yield.

[发布机构] Frankfurt Institute for Advanced Studies, Ruth-Moufang Str. 1, Frankfurt; 60438, Germany^1;Cyclotron Institute and Department of Physics, Texas A and M University, College Station; TX; 77843-3366, United States^2

[关键词] Anisotropic flows;Density fluctuation;Dileptons;First-order phase transitions;Higher-order;Quark matter;Spinodal instability;Transport modeling