Abstract
We analyze the features of strongly interacting matter in the presence of nonzero isospin chemical potential $\mu_I$, within a nonlocal two-flavor Polyakov-Nambu-Jona-Lasinio (PNJL) model. For a system at finite temperature $T$, we describe the behavior of various thermodynamic quantities and study the phase diagram in the $\mu_I - T$ plane. In particular, it is found that for values of $\mu_I$ larger than the pion mass and temperatures lower than a critical value of about 170 MeV the system lies in an isospin symmetry broken phase signaled by the presence of a nonzero pion condensate. Our results for the phase diagram are found to be in better agreement with those arising from lattice QCD calculations, as compared to the predictions from other theoretical approaches like the local PNJL model.
Highlights
The phase diagram of strongly interacting matter at finite temperature and chemical potential has been extensively studied along the past decades
For a system at finite temperature T, we describe the behavior of various thermodynamic quantities and study the phase diagram in the μI − T plane
Our results for the phase diagram are found to be in better agreement with those arising from lattice quantum chromodynamics (QCD) calculations, as compared to the predictions from other theoretical approaches like the local Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model
Summary
The phase diagram of strongly interacting matter at finite temperature and chemical potential has been extensively studied along the past decades. LQCD calculations at finite baryon chemical potential μB are not accessible by Monte Carlo simulations, due to the presence of a complex fermion determinant in the corresponding partition function (the so-called sign problem).
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
