The effect of an imaginary part of the Schwinger-Dyson equation at finite temperature and density
arXiv:1106.4379 · doi:10.1103/PhysRevC.85.045201
Abstract
We examined the effect of an imaginary part of the ladder approximation Schwinger-Dyson equation. We show the imaginary part enhances the effect of the first order transition, and affects a tricritical point. In particular, a chemical potential at a tricritical point is moved about 200(MeV). Thus, one should not ignore the imaginary part. On the other hand, since an imaginary part is small away from a tricritical point, one should be able to ignore an imaginary part. In addition, we also examined the contribution of the wave function renormalization constant.
12 pages, 14 figures
References in corpus (6)
- Color superconductivity in dense quark matter
- The QCD transition temperature: results with physical masses in the continuum limit II.
- The transition temperature in QCD
- Dual quark condensate and dressed Polyakov loops
- Chiral and deconfinement transition from Dyson-Schwinger equations
- Numerical Calculation of Schwinger-Dyson Equation with Momentum-Dependent Gauge Parameter at Finite Temperature