Polyakov-Quark-Meson-Diquark Model for two-color QCD
Nils Strodthoff, Lorenz von Smekal
TL;DR
This paper updates the phase diagram of two-color QCD using a chiral effective model with FRG, incorporating gauge dynamics and matter backcoupling, aligning well with recent lattice results.
Contribution
It introduces an improved quark-meson-diquark model with gauge field effects and matter backcoupling for two-color QCD phase diagram analysis.
Findings
Phase diagram aligns qualitatively with lattice results
Gauge field dynamics significantly affect the phase structure
Matter backcoupling influences the phase transition features
Abstract
We present an update on the phase diagram of two-color QCD from a chiral effective model approach based on a quark-meson-diquark model using the Functional Renormalization Group (FRG). We discuss the impact of perturbative UV contributions, the inclusion of gauge field dynamics via a phenomenological Polyakov loop potential, and the impact of matter backcoupling on the gauge sector. The corresponding phase diagram including these effects is found to be in qualitative agreement with recent lattice investigations.
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