Frobenius manifolds associated to Coxeter groups of type E7 and E8
Abstract
Flat coordinates for Frobenius manifolds defined on the orbit space of a Coxeter group W are specified through a certain system of generators of W-invariant polynomials. In this note, starting from basic invariants proposed by M.Mehta, we calculate flat coordinates for the exceptional groups of type E7 and E8, leading to a derivation of the potentials for the associated Frobenius structures.
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