Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-12-11
Physics
High Energy Physics
High Energy Physics - Theory
Typos corrected, Plain Tex 50 pages with t.o.c option
Scientific paper
We propose and study the following Mirror Principle: certain sequences of multiplicative equivariant characteristic classes on Kontsevich's stable map moduli spaces can be computed in terms of certain hypergeometric type classes. As applications, we compute the equivariant Euler classes of obstruction bundles induced by any concavex bundles -- including any direct sum of line bundles -- on $\P^n$. This includes proving the formula of Candelas-de la Ossa-Green-Parkes hence completing the program of Candelas et al, Kontesevich, Manin, and Givental, to compute rigorously the instanton prepotential function for the quintic in $\P^4$. We derive, among many other examples, the multiple cover formula for Gromov-Witten invariants of $\P^1$, computed earlier by Morrison-Aspinwall and by Manin in different approaches. We also prove a formula for enumerating Euler classes which arise in the so-called local mirror symmetry for some noncompact Calabi-Yau manifolds. At the end we interprete an infinite dimensional transformation group, called the mirror group, acting on Euler data, as a certain duality group of the linear sigma model.
Lian Biao
Liu Kaijian
Yau Shing-Tung
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