6 papers
Effective Lagrangian with valence gluons in extended SU(2) QCD model
Y. M. Cho, Haewon Lee, D. G. Pak
The effective action with homogeneous valence (off-diagonal) gluons as background fields in the extended SU(2) model of QCD is obtained in one-loop approximation. We keep the manif…
A Non-perturbative Estimate of Vacuum Polarization in QED
Y. M. Cho, D. G. Pak
We present a new estimate of the fine structure constant and the -function of QED at an arbitrary scale. Using the non-perturbative but convergent series expression of the one l…
Reply to the Comment by U. Jentschura and E. Weniger
D. G. Pak
It is shown that the criticism (revised version) made in hep-th/0007108 (by Jentschura and Weniger) on hep-th/0006057 has no valid ground. Furthemore we emphasize that the concept…
Dynamical Symmetry Breaking and Magnetic Confinement in QCD
Y. M. Cho, D. G. Pak
We present a gauge independent method to construct the effective action of QCD, and calculate the one loop effective action of QCD in an arbitrary constant background field…
Three Dimensional Differential Calculus on the Quantum Group SU_q(2) and Minimal Gauge Theory
D. G. Pak
Three-dimensional bicovariant differential calculus on the quantum group SU_q(2) is constructed using the approach based on global covariance under the action of the stabilizing su…
Effective Theory of QCD
Y. M. Cho, Haewon Lee, D. G. Pak
We derive a generalized Skyrme-Faddeev action as the effective action of QCD in the low energy limit. Our result demonstrates the existence of a mass gap in QCD which triggers the…