Possible Theta vacua states in heavy ion collisions - art. no. 054902

We have simulated the possible Theta vacua states in heavy ion collisions. In a quenchlike scenario, random phases of the chiral fields were evolved i n a zero temperature potential incorporating the breaking of U-A(1) symmetr y. Initial random phases very quickly settle into oscillation around the va lues dictated by the potential. The simulation indicates that Theta vacua s tates that can be populated in heavy ion collisions are a coherent superpos ition of a number of modes.