English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this note we discuss an integral representation for the vertex function ofthe cotangent bundle over the Grassmannian, $X=T^{*} Gr(k,n)$. This integralrepresentation can be used to compute the $\hbar\to \infty$ limit of the vertexfunction, where $\hbar$ denotes the equivariant parameter of a torus acting on$X$ by dilating the cotangent fibers. We show that in this limit the integralturns into the standard mirror integral representation for the $A$-series ofthe Grassmannian $Gr(k,n)$ with the Laurent polynomial Landau-Ginzburgsuperpotential of Eguchi, Hori and Xiong. We also observe some Dwork typecongruences for the coefficients of the $A$-series.

Polynomial superpotential for Grassmannian $Gr(k,n)$ from a limit of vertex function