1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
2Department of Physics, East China Normal University, Shanghai 200062
3Graduate School of the Chinese Academy of Sciences, Beijing 100039
Domain Wall in the Linear Sigma Model
MAO Hong1,3;LI Yun-De1,2;HUANG Tao1
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
2Department of Physics, East China Normal University, Shanghai 200062
3Graduate School of the Chinese Academy of Sciences, Beijing 100039
Abstract： We discuss the role of the axial U(1)A symmetry in the chiral phase transition using the U(Nf)R×U(Nf)L linear sigma model with two massless quark flavours. We expect that above a certain temperature, the axial U(1)A symmetry will be effectively restored as well as SU(Nf)R×SU(Nf)L. Then we can construct a string-like static solution of the η string and a kink-like classical solution of the domain wall during the chiral phase transition. We give out the possible signals for detecting the domain wall in ultrarelativistic heavy-ion collisions.
(Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions))
(Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.))
引用本文:
MAO Hong;LI Yun-De;HUANG Tao. Domain Wall in the Linear Sigma Model[J]. 中国物理快报, 2004, 21(11): 2155-2158.
MAO Hong, LI Yun-De, HUANG Tao. Domain Wall in the Linear Sigma Model. Chin. Phys. Lett., 2004, 21(11): 2155-2158.
2004, Vol. 21 
