Knots and Applications

Kauffman Knot Invariant from SO(N) or Sp(N) Chern-Simons theory and the Potts Model

speaker: Marco Astorino (CECS , Valdivia , Chile)

abstract: The expectation value ofWilson loop operators in three-dimensional SO(N) Chern-Simons gauge theory gives a known knot invariant: the Kauffman polynomial. Here this result is derived, at the first order, via a simple variational method. With the same procedure the skein relation for Sp(N) are also obtained. Jones polynomial arises as special cases: Sp(2), SO(-2) and SL(2,R). These results are confirmed and extended up to the second order, by means of perturbation theory, which moreover let us establish a duality relation between SO(±N) and Sp(-+N) invariants. A correspondence between the firsts orders in perturbation theory of SO(-2), Sp(2) or SU(2) Chern-Simons quantum holonomies and the partition function of the Q = 4 Potts Model is built.

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