Susceptibilities with multi-quark interactions in PNJL model
arXiv:1008.0768 · doi:10.1103/PhysRevD.82.114028
Abstract
We have investigated the fluctuations and the higher order susceptibilities of quark number, isospin number, electric charge and strangeness at vanishing chemical potential for 2+1 flavor Polyakov loop extended Nambu--Jona-Lasinio model. The calculations are performed for the bound effective potential in the quark sector requiring up to eight quark interaction terms. These have been contrasted to the lattice results which currently have somewhat heavier quarks in the light flavor sector. The results show sufficient qualitative agreement. For comparison we also present the results obtained with the conventional effective potential containing upto six quark interaction terms.
To appear Physical Review D
References in corpus (17)
- The order of the quantum chromodynamics transition predicted by the standard model of particle physics
- The QCD transition temperature: results with physical masses in the continuum limit
- The QCD Equation of State with almost Physical Quark Masses
- The Phase Structure of the Polyakov--Quark-Meson Model
- Susceptibilities and the Phase Structure of a Chiral Model with Polyakov Loops
- Susceptibilities and speed of sound from PNJL model
- Mesonic correlation functions at finite temperature and density in the Nambu-Jona-Lasinio model with a Polyakov loop
- Susceptibilities near the QCD (tri)critical point
- Thermodynamics of the PNJL model with nonzero baryon and isospin chemical potentials
- Critical endpoint in the Polyakov-loop extended NJL model
- Three flavor Nambu-Jona Lasinio model with Polyakov loop and competition with nuclear matter
- Quark number susceptibilities: lattice QCD versus PNJL model
- PNJL model with a Van der Monde term
- Effects of eight-quark interactions on the hadronic vacuum and mass spectra of light mesons
- Chiral phase transition in an extended NJL model with higher-order multi-quark interactions
- QCD thermodynamics with 2+1 flavors at nonzero chemical potential
- The Powers of Deconfinement