Schubert Polynomials and the Boson-Fermion Correspondence

Fri Apr 26, 2024 10:00 a.m.—11:00 a.m.
Exterior of Sheffield-Sterling-Strathcona Hall featuring a stone carving of Yale's coat of arms and motto

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Seminar: 
Friday Morning Seminar

Event time: 
Friday, April 26, 2024 - 10:00am

Location: 
KT801

Speaker: 
Sylvester Zhang

Speaker affiliation: 
University of Minnesota

Event description: 
The Boson-Fermion correspondence has found connection to symmetric functions through its application for deriving soliton solutions of the KP equations. In this framework, the space of Young diagrams is the Fermionic Fock space, while the ring of symmetric functions is the Bosonic Fock space. Then the (second part of) BF correspondence asserts that the map sending a partition to its Schur function forms an isomorphism as H-modules, with H being the Heisenberg algebra. In this talk, we give a generalization of this correspondence into the context of Schubert calculus, wherein the space of infinite permutations plays the role of the fermionic space, and the ring of back-stable symmetric functions represents the bosonic space.