Accessibility of color superconducting quark matter phases in heavy-ion collisions
2010 (English)Conference paper, Meeting abstract (Refereed)
We discuss a hybrid equation of state (EoS) that fulfills constraints for mass-radius relationships and cooling of compact stars. The quark matter EoS is obtained from a Polyakov-loop Nambu-Jona-Lasinio (PNJL) model with color superconductivity, and the hadronic one from a relativistic mean-field (RMF) model with density-dependent couplings (DD-RMF). For the construction of the phase transition regions we employ here for simplicity a Maxwell construction. We present the phase diagram for symmetric matter which exhibits two remarkable features: (1) a "nose"-like structure of the hadronic-to-quark matter phase border with an increase of the critical density at temperatures below T \sim 150 MeV and (2) a high critical temperature for the border of the two-flavor color superconducting (2SC) phase, Tc >160 MeV. We show the trajectories of heavy-ion collisions in the plane of excitation energy versus baryon density calculated using the UrQMD code and conjecture that for incident energies of 4 . . . 8 A GeV as provided, e.g., by the Nuclotron-M at JINR Dubna or by lowest energies at the future heavy-ion collision experiments CBM at FAIR and NICA at JINR, the color superconducting quark matter phase becomes accessible.
Place, publisher, year, edition, pages
2010. Vol. 3, 741-745 p.
Research subject Industrial Electronics
IdentifiersURN: urn:nbn:se:ltu:diva-35085Local ID: 979ea070-b1d5-11df-a707-000ea68e967bOAI: oai:DiVA.org:ltu-35085DiVA: diva2:1008337
EMMI Workshop and XXVI Max Born Symposium "Three Days of Strong Interactions" : 09/07/2009 - 11/07/2009
Godkänd; 2010; 20100827 (fresan)2016-09-302016-09-30Bibliographically approved