Gluon Radiation and Coherent States in Ultrarelativistic Nuclear Collisions

Abstract

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.

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

References in corpus (2)

• Quantum structure of the non-Abelian Weizsacker-Williams field for a very large nucleus
• Classical Gluon Radiation in Ultrarelativistic Nucleus-Nucleus Collisions

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• Multi-particle Production and Thermalization in High-Energy QCD
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• Nonlinear dynamics of soft boson excitations in hot QCD plasma I: plasmon-plasmon scattering
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• QCD in the nuclear medium and effects due to Cherenkov gluons
• Simple Mechanism of Softening Structure Functions at Low Transverse Momentum Region
• Angular pattern of minijet transverse energy flow in hadron and nuclear collisions
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