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arxiv: 0903.4459 · v6 · pith:FZJDZD5Bnew · submitted 2009-03-25 · 🧮 math.AG · math-ph· math.MP

Morphisms of CohFT algebras and quantization of the Kirwan map

classification 🧮 math.AG math-phmath.MP
keywords algebrascohftcohomologymorphismquantumkirwanmorphismsorbifold
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We introduce a notion of morphism of CohFT algebras, based on the analogy with A-infinity morphisms. We discuss a "quantization" of the classical Kirwan morphism to a morphism of CohFT algebras from the equivariant quantum cohomology of a G-variety to the quantum cohomology of its git or symplectic quotient, and an example relating to the orbifold quantum cohomology of a compact toric orbifold. Finally we identify the space of Cartier divisors on the moduli space of scaled marked curves; these appear in the splitting axiom.

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