29 research outputs found

    Categorified sl(N) invariants of colored rational tangles

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    We use categorical skew Howe duality to find recursion rules that compute categorified sl(N) invariants of rational tangles colored by exterior powers of the standard representation. Further, we offer a geometric interpretation of these rules which suggests a connection to Floer theory. Along the way we make progress towards two conjectures about the colored HOMFLY homology of rational links.Comment: 45 pages, many figures, uses dcpic.sty, v2: minor changes and new example 5

    Exponential growth of colored HOMFLY-PT homology

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    We define reduced colored sl(N) link homologies and use deformation spectral sequences to characterize their dependence on color and rank. We then define reduced colored HOMFLY-PT homologies and prove that they arise as large N limits of sl(N) homologies. Together, these results allow proofs of many aspects of the physically conjectured structure of the family of type A link homologies. In particular, we verify a conjecture of Gorsky, Gukov and Sto\v{s}i\'c about the growth of colored HOMFLY-PT homologies.Comment: 39 pages, many figures. v2: version accepted for publication in Advances in Mathematic

    Rational links and DT invariants of quivers

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    We prove that the generating functions for the colored HOMFLY-PT polynomials of rational links are specializations of the generating functions of the motivic Donaldson-Thomas invariants of appropriate quivers that we naturally associate with these links. This shows that the conjectural links-quivers correspondence of Kucharski-Reineke-Sto\v{s}i\'c-Su{\l}kowski as well as the LMOV conjecture hold for rational links. Along the way, we extend the links-quivers correspondence to tangles and, thus, explore elements of a skein theory for motivic Donaldson-Thomas invariants.Comment: 25 pages, comments welcom

    Evaluations of annular Khovanov--Rozansky homology

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    We describe the universal target of annular Khovanov-Rozansky link homology functors as the homotopy category of a free symmetric monoidal category generated by one object and one endomorphism. This categorifies the ring of symmetric functions and admits categorical analogues of plethystic transformations, which we use to characterize the annular invariants of Coxeter braids. Further, we prove the existence of symmetric group actions on the Khovanov-Rozansky invariants of cabled tangles and we introduce spectral sequences that aid in computing the homologies of generalized Hopf links. Finally, we conjecture a characterization of the horizontal traces of Rouquier complexes of Coxeter braids in other types.Comment: 41 page

    Functoriality of colored link homologies

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    We prove that the bigraded colored Khovanov-Rozansky type A link and tangle invariants are functorial with respect to link and tangle cobordisms.Comment: 41 pages, many colored figures, some changes following suggestions of a referee, to appear in Proc. Lond. Math. Soc., comments welcom

    Deformations of colored sl(N) link homologies via foams

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    We generalize results of Lee, Gornik and Wu on the structure of deformed colored sl(N) link homologies to the case of non-generic deformations. To this end, we use foam technology to give a completely combinatorial construction of Wu's deformed colored sl(N) link homologies. By studying the underlying deformed higher representation theoretic structures and generalizing the Karoubi envelope approach of Bar-Natan and Morrison we explicitly compute the deformed invariants in terms of undeformed type A link homologies of lower rank and color.Comment: 64 pages, many figure

    Super qq-Howe duality and web categories

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    We use super qq-Howe duality to provide diagrammatic presentations of an idempotented form of the Hecke algebra and of categories of glN\mathfrak{gl}_N-modules (and, more generally, glNM\mathfrak{gl}_{N|M}-modules) whose objects are tensor generated by exterior and symmetric powers of the vector representations. As an application, we give a representation theoretic explanation and a diagrammatic version of a known symmetry of colored HOMFLY--PT polynomials.Comment: 38 pages, many colored figures, extra section containing new results, added suggestions of two referees, comments welcom

    A coupled Temperley-Lieb algebra for the superintegrable chiral Potts chain

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    The hamiltonian of the NN-state superintegrable chiral Potts (SICP) model is written in terms of a coupled algebra defined by N1N-1 types of Temperley-Lieb generators. This generalises a previous result for N=3N=3 obtained by J. F. Fjelstad and T. M\r{a}nsson [J. Phys. A {\bf 45} (2012) 155208]. A pictorial representation of a related coupled algebra is given for the N=3N=3 case which involves a generalisation of the pictorial presentation of the Temperley-Lieb algebra to include a pole around which loops can become entangled. For the two known representations of this algebra, the N=3N=3 SICP chain and the staggered spin-1/2 XX chain, closed (contractible) loops have weight 3\sqrt{3} and weight 22, respectively. For both representations closed (non-contractible) loops around the pole have weight zero. The pictorial representation provides a graphical interpretation of the algebraic relations. A key ingredient in the resolution of diagrams is a crossing relation for loops encircling a pole which involves the parameter ρ=e2πi/3\rho= e^{ 2\pi \mathrm{i}/3} for the SICP chain and ρ=1\rho=1 for the staggered XX chain. These ρ\rho values are derived assuming the Kauffman bracket skein relation.Comment: 10 pages, 4 figures, further cubic relations adde
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