Cluster duality and mirror symmetry for the Grassmannian
Hot Topics: Cluster algebras and wall-crossing March 28, 2016 - April 01, 2016
Location: SLMath: Eisenbud Auditorium
B-model
algebraic combinatorics
Grassmannians and cell decompositions
cluster algebras
mirror symmetry
polytope theory
Plucker coordinates
14P15 - Real-analytic and semi-analytic sets [See also 32B20, 32C05]
14K22 - Complex multiplication and abelian varieties [See also 11G15]
14K20 - Analytic theory of abelian varieties; abelian integrals and differentials
13P10 - Gröbner bases; other bases for ideals and modules (e.g., Janet and border bases)
14488
In joint work with Konstanze Rietsch, we use the cluster structure on the Grassmannian and the combinatorics of plabic graphs to exhibit a new aspect of mirror symmetry for Grassmannians in terms of polytopes. From a given plabic graph G we have two coordinate systems: we have a positive chart for our A-model Grassmannian, and we have a cluster chart for our B-model (Landau-Ginzburg model) Grassmannian. On the A-model side, we use the positive chart to associate a corresponding Newton-Okounkov (A-model) polytope. On the B-model side, we use the cluster chart to express the superpotential as a Laurent polynomial, and by tropicalizing this expression, we obtain a B-model polytope. Our main result is that these two polytopes coincide
L. Williams
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14488
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