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HK: Fachverband Physik der Hadronen und Kerne

HK 23: Heavy-Ion Collisions and QCD Phases V

HK 23.2: Talk

Tuesday, March 12, 2024, 16:15–16:30, HBR 62: EG 18

Renormalization Group Consistent treatment of NJL Color Superconductivity — •Hosein Gholami — TU Darmstadt

The Nambu-Jona-Lasinio (NJL) model and specifically its extension to color superconductivity is an effective model for investigating dense quark matter. However, the reliability of its results is challenged by cut-off artifacts emerging near cut-off energy scales. In this presentation we focus on a Renormalization Group (RG) consistent treatment that successfully eliminates these artifacts. Our study reveals a substantial change in the previously established phase diagram of neutral color superconducting matter. The RG-consistent treatment not only eliminates cut-off artifacts but also aligns with an earlier Ginzburg-Landau analysis, suggesting the appearance of a so-called dSC phase in the Color-Flavor Locked (CFL) melting pattern.

Keywords: color superconductivity; NJL model; Renormalization Group Consistency; QCD phase diagram; Cut-off artifacts