In the NJL model with experimental-constrained π-ρ mixing, direct determinant and near-pole mass extraction schemes reproduce the robust non-monotonic lowest charged pion mode in magnetic field while rest-mass and local schemes do not.
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A temperature-dependent cutoff in RG-consistent (P)NJL models improves convergence to the Stefan-Boltzmann limit and enhances agreement with lattice QCD data for net-baryon number fluctuations at zero chemical potential.
Pion-rho mixing in magnetic fields induces a turnover in the lowest Landau level charged pion energy through level repulsion amplified by rho wave-function renormalization suppression, qualitatively reproducing lattice QCD results.
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RG-Consistent (P)NJL Model: Impact of Thermal Cutoff Modifications on Thermodynamics and Net-Baryon Number Fluctuations
A temperature-dependent cutoff in RG-consistent (P)NJL models improves convergence to the Stefan-Boltzmann limit and enhances agreement with lattice QCD data for net-baryon number fluctuations at zero chemical potential.