Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1996-07-03
Nucl.Phys. B488 (1997) 677-718
Physics
High Energy Physics
High Energy Physics - Theory
44 pages, LaTex, epsf.sty, 15 figures
Scientific paper
10.1016/S0550-3213(96)00689-X
The general structure of the perturbative expansion of the vacuum expectation value of a product of Wilson-loop operators is analyzed in the context of Chern-Simons gauge theory. Wilson loops are opened into Wilson lines in order to unravel the algebraic structure encoded in the group factors of the perturbative series expansion. In the process a factorization theorem is proved for Wilson lines. Wilson lines are then closed back into Wilson loops and new link invariants of finite type are defined. Integral expressions for these invariants are presented for the first three primitive ones of lower degree in the case of two-component links. In addition, explicit numerical results are obtained for all two-component links of no more than six crossings up to degree four.
Alvarez Marcelo
Labastida Jose M. F.
Perez Emanuelle
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