Photon production from non-equilibrium disoriented chiral condensates in a longitudinal expansion: A theoretic framework |
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Authors: | Da-Shin Lee Yeo-Yie Charng |
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Institution: | a Department of Physics, National Dong Hwa University, Hua-Lien, 97401, Taiwan, ROC b Institute of Physics, Academia Sinica, Taipei, 11529, Taiwan, ROC |
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Abstract: | A theoretical framework is developed for treating the quantization of the photons in a spacetime with a longitudinal expansion. This can be used to study the production of the photons through the non-equilibrium relaxation of a disoriented chiral condensate presumably formed in the expanding hot central region in ultra-relativistic heavy-ion collisions. These photons can be a signature of the formation of disoriented chiral condensates in the direct photon measurements of heavy-ion collisions. |
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