Colored HOMFLY-PT for hybrid weaving knot W^3(m, n)

Abstract

Weaving knots W(p, n) of type (p, n) denote an infinite family of hyperbolic knots which have not been addressed by the knot theorists as yet. Unlike the well known (p, n) torus knots, we do not have a closed-form expression for HOMFLY-PT and the colored HOMFLY-PT for W(p, n). In this paper, we confine to a hybrid generalization of W(3, n) which we denote as W^3(m, n) and obtain closed form expression for HOMFLY-PT using the Reshitikhin and Turaev method involving R-matrices. Further, we also compute [r]-colored HOMFLY-PT for W(3, n). Surprisingly, we observe that trace of the product of two dimensional R^-matrices can be written in terms of infinite family of Laurent polynomials Vn,t[q] whose absolute coefficients has interesting relation to the Fibonacci numbers Fn. We also computed reformulated invariants and the BPS integers in the context of topological strings. From our analysis, we propose that certain refined BPS integers for weaving knot W(3, n) can be explicitly derived from the coefficients of Chebyshev polynomials of first kind.