Abstract
We simulate quenching in the O(4) σ model of hadronic matter expanding along the z axis, with randomly generated initial conditions imposed at a given boost invariant time = √- . A comparison of our results with the simulations of Rajagopal and Wilczek for a nonexpanding case shows that the normalized power exhibits approximately the same frequency of oscillations in the laboratory time in both cases. However, the response of the expanding system depends on : e.g., for =1 fm it is about 2 orders of magnitude smaller than for the nonexpanding system. Also, the relaxation time becomes shorter with expansion present. When →∞ the two cases become identical. Kinematical windows for the production of a disoriented chiral condensate are also discussed.
- Received 25 July 1994
DOI:https://doi.org/10.1103/PhysRevD.51.3739
©1995 American Physical Society