Green's functions in the color field of a large nucleus
Feb, 199421 pages
Published in:
- Phys.Rev.D 50 (1994) 2225-2233
e-Print:
- hep-ph/9402335 [hep-ph]
Report number:
- TPI-MINN-94-7-T,
- NUC-MINN-94-2-T,
- HEP-MINN-94-1242-T
Citations per year
Abstract: (arXiv)
We compute the Green's functions for scalars, fermions and vectors in the color field associated with the infinite momentum frame wavefunction of a large nucleus. Expectation values of this wavefunction can be computed by integrating over random orientations of the valence quark charge density. This relates the Green's functions to correlation functions of a two dimensional, ultraviolet finite, field theory. We show how one can compute the sea quark distribution functions, and explictly compute them in the kinematic range of transverse momenta, \alpha_s^2 \mu^2 << k_t^2 << \mu^2, where is the average color charge squared per unit area. When m_{quark}^2 << \mu^2 \sim A^{1/3}, the sea quark contribution to the infinite momentum frame wave function saturates at a value that is the same as that for massless sea quarks.- nucleus: wave function
- color
- scalar meson: propagator
- fermion: propagator
- gluon: propagator
- field theory: Euclidean
- dimension: 2
- background field
- correlation function
- quark: momentum spectrum
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