Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2004-01-27
Phys.Lett. B583 (2004) 103-110
Physics
Nuclear Physics
Nuclear Theory
REVTEX, 11pp. incl. 4 figures, to be published in Phys. Lett. B
Scientific paper
10.1016/j.physletb.2003.12.052
The vacuum parton creation in quickly varying external fields is studied at the time scale of order 1 fm/$c$ typical for the quark-gluon plasma formation and thermalization. To describe the pre-equilibrium evolution of the system the transport kinetic equation is employed. It is shown that the dynamics of production process at times comparable with particle inverse masses can deviate considerably from that based on classical Schwinger-like estimates for homogeneous and constant fields. One of the effects caused by non-stationary chromoelectric fields is the enhancement of the yield of $s\bar{s}$ quark pairs. Dependence of this effect on the shape and duration of the field pulse is studied together with the influence of string fusion and reduction of quark masses.
Prozorkevich Alexander V.
Skokov Vladimir
Smolyansky Stanislav A.
Zabrodin Eugene E.
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