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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 |
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| Cite this article: |
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MAO Hong, LI Yun-De, HUANG Tao 2004 Chin. Phys. Lett. 21 2155-2158 |
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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.
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| Keywords:
25.75.-q
12.39.Fe
98.80.Cq
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Published: 01 November 2004
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| PACS: |
25.75.-q
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(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))
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12.39.Fe
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(Chiral Lagrangians)
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98.80.Cq
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(Particle-theory and field-theory models of the early Universe (including cosmic pancakes, cosmic strings, chaotic phenomena, inflationary universe, etc.))
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