Cyclotomic expansion of generalized Jones polynomials

Abstract

In (Compos. Math. 152(7): 1333–1384, 2016), Berest and Samuelson proposed a conjecture that the Kauffman bracket skein module of any knot in \(S^3\) carries a natural action of a rank 1 double-affine Hecke algebra \(SH_{q,t_1, t_2}\) depending on 3 parameters \(q, t_1, t_2\). As a consequence, for a knot K satisfying this conjecture, we defined a three-variable polynomial invariant \(J^K_n(q,t_1,t_2)\) generalizing the classical coloured Jones polynomials \(J^K_n(q)\). In this paper, we give explicit formulas and provide a quantum group interpretation for the polynomials \(J^K_n(q,t_1,t_2)\). Our formulas generalize the so-called cyclotomic expansion of the classical Jones polynomials constructed by Habiro (Invent. Math. 171(1): 1–81, 2008) : as in the classical case, they imply the integrality of \(J^K_n(q,t_1,t_2)\) and, in fact, make sense for an arbitrary knot K independent of whether or not it satisfies the conjecture of Berest and Samuelson (Compos. Math. 152(7): 1333–1384, 2016). When one of the Hecke deformation parameters is set to be 1, we show that the coefficients of the (generalized) cyclotomic expansion of \(J^K_n(q,t_1)\) are expressed in terms of Macdonald orthogonal polynomials.