| Issue |
EPJ Web Conf.
Volume 364, 2026
XXXI International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions “Quark Matter 2025”
|
|
|---|---|---|
| Article Number | 02002 | |
| Number of page(s) | 4 | |
| Section | Awards | |
| DOI | https://doi.org/10.1051/epjconf/202636402002 | |
| Published online | 17 April 2026 | |
https://doi.org/10.1051/epjconf/202636402002
Removing cutoff artifacts in the NJL model by a Renormalization Group consistent treatment
1 Technische Universität Darmstadt, Fachbereich Physik, Institut für Kernphysik, Theoriezentrum, Schlossgartenstr. 2, D-64289 Darmstadt, Germany
2 Helmholtz Forschungsakademie Hessen für FAIR (HFHF), GSI Helmholtzzentrum für Schwerionen-forschung, Campus Darmstadt, D-64289 Darmstadt, Germany
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Published online: 17 April 2026
Abstract
We summarize how a renormalization-group (RG)-consistent treatment removes well-known artifacts in NJL-model descriptions of colorsuperconducting quark matter. We introduce two RG-consistent schemes, "minimal" and "massless", and present analytic solutions for the diquark gap at T = 0 and for the phase boundary Tc(μ) in symmetric massless matter, representing the high-density limit of the model. We compare the pairing gaps, phase diagram, and speed of sound with results obtained using conventional regularization.
© The Authors, published by EDP Sciences, 2026
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