Givental symmetries of Frobenius manifolds and multi-component KP tau-functions

Details Givental symmetries of Frobenius manifolds and multi-component KP tau-functions Givental symmetries of Frobenius manifolds and multi-component KP tau-functions

2009-05-06

arxiv.org/abs/0905.0795v1

Adv. Math. 224 (2010), no. 3, 1031-1056

Mathematics

Algebraic Geometry

25 pages

Scientific paper

10.1016/j.aim.2009.12.015

We establish a link between two different constructions of the action of the twisted loop group on the space of Frobenius structures. The first construction (due to Givental) describes the action of the twisted loop group on the partition functions of formal Gromov-Witten theories. The explicit formulas for the corresponding tangent action were computed by Y.-P. Lee. The second construction (due to van de Leur) describes the action of the same group on the space of Frobenius structures via the multi-component KP hierarchies. Our main theorem states that the genus zero restriction of the Y.-P. Lee formulas coincides with the tangent van de Leur action.

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