Diquark and chiral condensate in a self-consistent NJL-type model

Abstract

In this work, a modified two-flavor NJL-type model is utilized, in which the contact current-current interaction is Fierz-transformed into quark-antiquark interactions and quark-quark interactions, which are directly related to the chiral condensate and diquark condensate, respectively. Under mean-field approximation, the chiral condensate and the diquark condensate are studied on the same footing. We discuss in detail the competition between the chiral condensate and the diquark condensate, which are exclusively paired with u and d quarks, while also investigating the order of the chiral phase transition through an analysis of the resulting chiral susceptibility.

9 pages,5 figures, Phys. Rev. D (2023) accepted

References in corpus (6)

• Color superconductivity in dense quark matter
• Phenomenological QCD equation of state for massive neutron stars
• Bayesian inference of strange star equation of state using the GW170817 and GW190425 data
• Interacting $ud$ and $uds$ quark matter at finite densities and quark stars
• QCD phase diagram in chiral imbalance with self-consistent mean field approximation
• Color superconductivity with self-consistent NJL-type model

Cited by in corpus (5)

• Hybrid stars with large quark cores within the parity doublet model and modified NJL model
• Two-flavor color superconducting quark stars may not exist
• Bayesian inference of strangeon matter using the measurements of PSR J0437-4715 and GW190814
• Speed of sound and polytropic index in QCD matter
• Constraining the competition between the deconfinement and chiral phase transitions in light of the multimessenger era