TY - JOUR

T1 - Wall-crossing in genus zero quasimap theory and mirror maps

AU - Ciocan-Fontanine, Ionuţ

AU - Kim, Bumsig

N1 - Publisher Copyright:
© Foundation Compositio Mathematica 2014.

PY - 2014/10/1

Y1 - 2014/10/1

N2 - For each positive rational number ε, the theory of ε-stable quasimaps to certain GIT quotients W//G developed in [CKM14] gives rise to a Cohomological Field Theory. Furthermore, there is an asymptotic theory corresponding to ε → 0. For ε > 1 one obtains the usual Gromov-Witten theory of W//G, while the other theories are new. However, they are all expected to contain the same information and, in particular, the numerical invariants should be related by wall-crossing formulas. In this paper we analyze the genus zero picture and find that the wall-crossing in this case significantly generalizes toric mirror symmetry (the toric cases correspond to abelian groups G). In particular, we give a geometric interpretation of the mirror map as a generating series of quasimap invariants. We prove our wall-crossing formulas for all targets W//G which admit a torus action with isolated fixed points, as well as for zero loci of sections of homogeneous vector bundles on such W//G.

AB - For each positive rational number ε, the theory of ε-stable quasimaps to certain GIT quotients W//G developed in [CKM14] gives rise to a Cohomological Field Theory. Furthermore, there is an asymptotic theory corresponding to ε → 0. For ε > 1 one obtains the usual Gromov-Witten theory of W//G, while the other theories are new. However, they are all expected to contain the same information and, in particular, the numerical invariants should be related by wall-crossing formulas. In this paper we analyze the genus zero picture and find that the wall-crossing in this case significantly generalizes toric mirror symmetry (the toric cases correspond to abelian groups G). In particular, we give a geometric interpretation of the mirror map as a generating series of quasimap invariants. We prove our wall-crossing formulas for all targets W//G which admit a torus action with isolated fixed points, as well as for zero loci of sections of homogeneous vector bundles on such W//G.

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U2 - 10.14231/AG-2014-019

DO - 10.14231/AG-2014-019

M3 - Article

AN - SCOPUS:84929834224

VL - 1

SP - 400

EP - 448

JO - Algebraic Geometry

JF - Algebraic Geometry

SN - 2313-1691

IS - 4

ER -