Ribbon Graphs and Their Invariants Derived from Quantum Groups

Ribbon Graphs and Their Invariants Derived from Quantum Groups

1990 | N. Yu. Reshetikhin and V. G. Turaev
This paper introduces colored ribbon graphs in 3-dimensional space and defines Jones-type invariants for them. The authors generalize the Jones polynomial of links to graphs in 3D space by constructing a functor from the category of graphs to the category of representations of quantum groups. The paper discusses the relationship between Jones-type polynomials and quantum groups, and how these invariants can be constructed using quantum R-matrices. The authors also explore the connection between these invariants and conformal field theories, and how they relate to the topological Chern-Simons action. The paper defines colored ribbon graphs as graphs with vertices represented by small squares and edges represented by thin strips, and colors are assigned using quasitriangular Hopf algebras. The authors show that the category of colored ribbon graphs forms a compact braided strict monoidal category. They also construct a canonical covariant functor from the category of colored ribbon graphs to the category of modules, which generalizes the Jones polynomial of links when the quantum group is U_q(sl_2). The paper emphasizes that colored ribbon graphs are not purely topological objects but also involve representation theory. The authors also discuss applications and variations of their main theorem, as well as examples and further comments on the theorem. The paper concludes with a plan for the rest of the paper, which includes a review of braided monoidal categories, quasitriangular and ribbon Hopf algebras, and the definition of colored ribbon graphs.This paper introduces colored ribbon graphs in 3-dimensional space and defines Jones-type invariants for them. The authors generalize the Jones polynomial of links to graphs in 3D space by constructing a functor from the category of graphs to the category of representations of quantum groups. The paper discusses the relationship between Jones-type polynomials and quantum groups, and how these invariants can be constructed using quantum R-matrices. The authors also explore the connection between these invariants and conformal field theories, and how they relate to the topological Chern-Simons action. The paper defines colored ribbon graphs as graphs with vertices represented by small squares and edges represented by thin strips, and colors are assigned using quasitriangular Hopf algebras. The authors show that the category of colored ribbon graphs forms a compact braided strict monoidal category. They also construct a canonical covariant functor from the category of colored ribbon graphs to the category of modules, which generalizes the Jones polynomial of links when the quantum group is U_q(sl_2). The paper emphasizes that colored ribbon graphs are not purely topological objects but also involve representation theory. The authors also discuss applications and variations of their main theorem, as well as examples and further comments on the theorem. The paper concludes with a plan for the rest of the paper, which includes a review of braided monoidal categories, quasitriangular and ribbon Hopf algebras, and the definition of colored ribbon graphs.
Reach us at info@study.space