Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1998-02-04
Phys.Rev.D58:094003,1998
Physics
Nuclear Physics
Nuclear Theory
65 pages, including 19 figures and 2 tables. Uses aps.sty, eqsecnum.sty, amssymb.sty, revtex.sty and graphicx.sty. Submitted t
Scientific paper
10.1103/PhysRevD.58.094003
Within QED, we examine several issues related to constructing a parton-model-based QCD transport theory. We rewrite the QED analog of the parton model, the Weizsaecker-Williams Approximation, entirely in terms of phase-space quantities and we study the phase-space photon and electron densities created by a classical point charge. We find that the densities take a distinctive ``source-propagator'' form. This form does not arise in a conventional derivation of the semiclassical transport equations because of the overuse of the gradient approximation. We do not apply the gradient approximation and so derive the phase-space analog of the Generalized Fluctuation-Dissipation Theorem. Together, this theorem and the expression for the phase-space particle self-energies give a set of coupled phase-space evolution equations. We illustrate how these evolution equations can be used perturbatively or to derive semiclassical transport equations. Our work relies on phase-space propagators and sources, so we describe them in detail when calculating the photon and electron phase-space densities. We use these tools to discuss the shape of a nucleon's parton cloud.
Brown David A.
Danielewicz Pawel
No associations
LandOfFree
Partons in Phase Space does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Partons in Phase Space, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Partons in Phase Space will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-253303