Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-06-10
Phys.Rev.D78:125002,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
final version to appear in Phys. Rev. D
Scientific paper
10.1103/PhysRevD.78.125002
In the holographic model of QCD, theta dependence sharply changes at the point of confinement deconfinement phase transition. In large N QCD such a change in theta behavior can be related to the breakdown of the instanton expansion at some critical temperature T_c. Associating this temperature with confinement-deconfinement phase transition leads to the description of the latter in terms of dissociation of instantons into the fractionally charged instanton quarks. To elucidate this picture, we introduce the nonvanishing chiral condensate in the deconfining phase and assume a specific lagrangian for the eta' field in the confining phase. In the resulting picture the high temperature phase of the theory consists of the dilute gas of instantons, while the low temperature phase is described in terms of freely moving fractional instanton quarks.
Parnachev Andrei
Zhitnitsky Ariel
No associations
LandOfFree
Phase Transitions, theta Behavior and Instantons in QCD and its Holographic Model 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 Phase Transitions, theta Behavior and Instantons in QCD and its Holographic Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase Transitions, theta Behavior and Instantons in QCD and its Holographic Model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-264175