Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2006-12-19
Braz.J.Phys.37:33-36,2007
Physics
High Energy Physics
High Energy Physics - Phenomenology
Work presented at the 18th Workshop on Hadronic Interactions, Sao Paulo, SP, Brazil, May 2006. Accepted to be published
Scientific paper
10.1590/S0103-97332007000100012
The linear sigma model at finite baryonic density with a massive vector field is investigated considering that all the bosonic fields develop non zero expected classical values, eventually associated to condensates and corresponding to dynamical symmetry breakings which might occur in the QCD phase diagram. A modified equation for the classical vector field is proposed with its respective solution. Some in medium properties of the model (mainly masses) are investigated within reasonable prescriptions. In particular the behavior of the {\it in medium} pion and sigma masses and a particular way of calculating {\it in medium} coupling to baryons is investigated. A symmetry radius for finite baryonic densities is proposed and calculated in different ways in terms of the other variables of the model and these different ways of calculating it agree quite well. However, assuming that the pion and sigma masses go to zero close to the restoration of chiral symmetry a too high value for the critical density is obtained $\rho_c \simeq 4.3 \rho_0$.
No associations
LandOfFree
Linear Sigma Model at finite baryonic density and symmetry breakings does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Linear Sigma Model at finite baryonic density and symmetry breakings, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear Sigma Model at finite baryonic density and symmetry breakings will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-242028