ASYMPTOTICS OF THE COLORED JONES POLYNOMIAL AND THEA-POLYNOMIAL KAZUHIRO HIKAMI A. We reveal a relationship between the colored Jones polynomial and the A-polynomial for twist knots. We demonstrate that an asymptotics of the N-colored Jones polynomial in large N gives the potential function, and that the A-polynomial can be computed. We also discuss on a case of torus knots.
IThe N-colored Jones polynomial J K (N) is a quantum invariant which is defined based on the N-dimensional irreducible representation of the quantum group U q (sl(2)). Motivated by Volume Conjecture raised by Kashaev [16], it was pointed out that the colored Jones polynomial at a specific value should be related to the hyperbolic volume of knot complement [21].As another example of the knot invariant related to S L(2; C), we have the A-polynomial [2,3]. This is defined as an algebraic curve of eigenvalues of the S L(2; C) representation of the boundary torus of knot, and contrary to the quantum invariants such as the colored Jones polynomial it includes many geometrical informations such as the boundary slopes of the knot.Those two knot invariants are superficially independent. Though, it is recently conjectured [4] that the homogeneous difference equation of the N-colored Jones polynomial for knot K with respect to N gives the A-polynomial for K (AJ conjecture). This fact was originally verified for both the trefoil and the figure-eight knot with a help of computer algebraic system [4], and was later proved for the torus knots [10]. We should note that in Ref. 26 a recursion relation of the summand of the colored Jones polynomial for the twist knots was shown to give the A-polynomial. See also Refs. 6, 7.Recently pointed out is still another connection between the colored Jones polynomial and the A-polynomial. It was demonstrated [8,22] that the A-polynomial has a relationship with an asymptotic limit of the colored Jones polynomial for a case of the figure-eight knot. Our purpose in this article is to show that this correspondence is also supported for a case of the twist knots and the torus knots.We recall a fact [5] that the N-colored Jones function J K (N) for knot K can be written in a form of the q-hypergeometric function. Once we obtain an invariant in the form of the q-hypergeometric series, we may define the H-function [20] for knot K based on the integrand of an asymptotics of