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arXiv · 1608.05128

Knot Invariants and M-Theory I: Hitchin Equations, Chern-Simons Actions, and the Surface Operators

Keshav Dasgupta·Veronica Errasti Diez·P. Ramadevi·Radu Tatar
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Abstract

Recently Witten introduced a type IIB brane construction with certain boundary conditions to study knot invariants and Khovanov homology. The essential ingredients used in his work are the topologically twisted N = 4 Yang-Mills theory, localization equations and surface operators. In this paper we extend his construction in two possible ways. On one hand we show that a slight modification of Witten's brane construction could lead, using certain well defined duality transformations, to the model used by Ooguri-Vafa to study knot invariants using gravity duals. On the other hand, we argue that both these constructions, of Witten and of Ooguri-Vafa, lead to two different seven-dimensional manifolds in M-theory from where the topological theories may appear from certain twisting of the G-flux action. The non-abelian nature of the topological action may also be studied if we take the wrapped M2-brane states in the theory. We discuss explicit constructions of the seven-dimensional manifolds in M-theory, and show that both the localization equations and surface operators appear naturally from the Hamiltonian formalism of the theories. Knots and link invariants are then constructed using M2-brane states in both the models.

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Keshav Dasgupta, Veronica Errasti Diez, P. Ramadevi, Radu Tatar. 2016-08-17. Knot Invariants and M-Theory I: Hitchin Equations, Chern-Simons Actions, and the Surface Operators. https://doi.org/10.1103/physrevd.95.026010

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