Gluon Radiation and Coherent States in Ultrarelativistic Nuclear Collisions

Details Gluon Radiation and Coherent States in Ultrarelativistic Nuclear Collisions Gluon Radiation and Coherent States in Ultrarelativistic Nuclear Collisions

1997-05-14

arxiv.org/abs/nucl-th/9705024v1

Phys.Rev.C56:2191-2201,1997

Physics

Nuclear Physics

Nuclear Theory

15 pages, 6 figures, RevTeX (with epsf, psfig style files)

Scientific paper

10.1103/PhysRevC.56.2191

We explore the correspondence between classical gluon radiation and quantum radiation in a coherent state for gluons produced in ultrarelativistic nuclear collisions. The expectation value of the invariant momentum distribution of gluons in the coherent state is found to agree with the gluon number distribution obtained classically from the solution of the Yang-Mills equations. A criterion for the applicability of the coherent state formalism to the problem of radiation in ultrarelativistic nucleus-nucleus collisions is discussed. This criterion is found to be fulfilled for midrapidity gluons with perturbative transverse momenta larger than about 1-2 GeV and produced in collisions between valence partons.

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