The Kontsevich Integral And

نویسنده

  • NATHAN GEER
چکیده

Given a finite dimensional representation of a semisimple Lie algebra there are two ways of constructing link invariants: 1) quantum group invariants using the R-matrix, 2) the Kontsevich universal link invariant followed by the Lie algebra based weight system. Le and Murakami showed that these two link invariants are the same. These constructions can be generalized to some classes of Lie superalgebras. In this paper we show that constructions 1) and 2) give the same invariants for the Lie superalgebras of type A-G. We use this result to investigate the Links-Gould invariant. We also give a positive answer to a conjecture of Patureau-Mirand’s concerning invariants arising from the Lie superalgebra D(2, 1;α).

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The Combinatorial Gauss Diagram Formula for Kontsevich Integral

In this paper, we shall give an explicit Gauss diagram formula for the Kontsevich integral of links up to degree four. This practical formula enables us to actually compute the Kontsevich integral in a combinatorial way.

متن کامل

The Loop Expansion of the Kontsevich Integral, the Null-move and S-equivalence

The Kontsevich integral of a knot is a graph-valued invariant which (when graded by the Vassiliev degree of graphs) is characterized by a universal property; namely it is a universal Vassiliev invariant of knots. We introduce a second grading of the Kontsevich integral, the Euler degree, and a geometric nullmove on the set of knots. We explain the relation of the null-move to S-equivalence, and...

متن کامل

6 v 1 6 J an 1 99 4 THE UNIVERSAL VASSILIEV - KONTSEVICH INVARIANT FOR FRAMED ORIENTED LINKS

We give a generalization of the Reshetikhin-Turaev functor for tangles to get a combinatorial formula for the Kontsevich integral for framed oriented links. The uniqueness of the universal Vassiliev-Kontsevich invariant of framed oriented links is established. As a corollary one gets the rationality of Kontsevich integral.

متن کامل

The Kontsevich Integral and Algebraic Structures on the Space of Diagrams

This paper is part expository and part presentation of calculational results. The target space of the Kontsevich integral for knots is a space of diagrams; this space has various algebraic structures which are described here. These are utilized with Le’s theorem on the behaviour of the Kontsevich integral under cabling and with the Melvin-Morton Theorem, to obtain, in the Kontsevich integral fo...

متن کامل

Beads: from Lie Algebras to Lie Groups

The Kontsevich integral of a knot is a powerful invariant which takes values in an algebra of trivalent graphs with legs. Given a Lie algebra, the Kontsevich integral determines an invariant of knots (the so-called colored Jones function) with values in the symmetric algebra of the Lie algebra. Recently A. Kricker and the author constructed a rational form of the Kontsevich integral which takes...

متن کامل

The Loop Expansion of the Kontsevich Integral, Abelian Invariants of Knots and S-equivalence

Hidden in the expansion of the Kontsevich integral, graded by loops rather than by degree, is a new notion of finite type invariants of knots, closely related to S-equivalence, and with respect to which the Kontsevich integral is the universal finite type invariant, modulo S-equivalence. In addition, the 2-loop part Q of the Kontsevich integral behaves like an equivariant version of Casson’s in...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008