A doubly critical point in the color-superconducting regime of the RG-consistent NJL model

[2608.27677] A doubly critical point in the color-superconducting regime of the RG-consistent NJL model Skip to main content Search Submit Donate Log in High Energy Physics - Phenomenology arXiv:2608.27677 (hep-ph) [Submitted on 27 Aug 2026] Title: A doubly critical point in the color-superconducting regime of the RG-consistent NJL model Authors: Hosein Gholami , Marco Hofmann , Michael Buballa View PDF HTML (experimental) Abstract: Nambu--Jona-Lasinio (NJL) models of color-superconducting quark matter suffer from cutoff artifacts once temperature or quark chemical potential become comparable to the model cutoff. These artifacts can be removed employing a renormalization-group (RG) consistent regularization scheme. In this article we perform a systematic study of neutral beta-equilibrated quark matter within the three-flavor NJL model with RG consistent regularization. Varying the coupling constant in the scalar diquark channel, we map out the phase diagram in the plane of chemical potential and temperature, and identify the gapless domains. We particularly focus on the melting pattern of the color-flavor locked (CFL) phase. At larger couplings the CFL phase melts through a so-called $d$SC phase, as expected from leading-order Ginzburg--Landau analyses. Lowering the coupling, the phase structure becomes markedly richer: While at large densities the CFL phase still melts through a $dSC$ phase, we find a $uSC$ phase at lower chemical potential. These phases, $uSC$ and $dSC$ meet at a doubly critical point whose existence had been anticipated long ago but was never demonstrated explicitly in a model. Comments: 13 pages, 3 figures. Contributed proceeding for the 2nd Workshop on Matter, Astrophysics, Gravitation, Ions and Cosmology (MAGIC 2025), Buenos Aires, September 2025. Comments are welcome Subjects: High Energy Physics - Phenomenology (hep-ph) ; High Energy Physics - Theory (hep-th); Nuclear Theory (nucl-th) Cite as: arXiv:2608.27677 [hep-ph] (or arXiv:2608.27677v1 [hep-ph] for this version) https://doi.org/10.48550/arXiv.2608.27677 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Hosein Gholami [ view email ] [v1] Thu, 27 Aug 2026 20:07:34 UTC (1,045 KB) Full-text links: Access Paper: View PDF HTML (experimental) TeX Source view license Current browse context: hep-ph < prev | next > new | recent | 2026-08 Change to browse by: hep-th nucl-th References & Citations INSPIRE HEP NASA ADS Google Scholar Semantic Scholar export BibTeX citation Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) IArxiv recommender toggle IArxiv Recommender ( What is IArxiv? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab) Major funding support from

Related documents

• A doubly critical point in the color-superconducting regime of the RG-consistent NJL model#779601
• Subtractive renormalization of the next-to-leading order NN interaction#431532
• Criticality in the disordered $N$-color Ashkin-Teller model#927330
• QC-UPM/OgTRQC: Additional data, methods, results, and interpretation for Proton Transport and Polarization Relaxation in Hx–NdNiO3 : Literature-Constrained Reduced Models and a Recoverability Diagnostic#1160411
• Superconductivity in Jellium Model Revisited#677659