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It is shown that the matter content of F-theory compactifications on elliptic Calabi-Yau threefolds is encoded in the Gromov-Witten invariants.

High Energy Physics - Theory · Physics 2007-05-23 Yu. Malyuta , T. Obikhod

We prove that the system of Gromov-Witten invariants of the product of two varieties is equal to the tensor product of the systems of Gromov-Witten invariants of the two factors.

alg-geom · Mathematics 2007-05-23 Kai Behrend

Relative orbifold Gromov-Witten theory is set-up and the degeneration formula is given.

Symplectic Geometry · Mathematics 2025-01-17 Bohui Chen , An-Min Li , Shanzhong Sun , Guosong Zhao

We construct positive-genus analogues of Welschinger's invariants for many real symplectic manifolds, including the odd-dimensional projective spaces and the renowned quintic threefold. In some cases, our invariants provide lower bounds for…

Symplectic Geometry · Mathematics 2018-02-27 Penka Georgieva , Aleksey Zinger

The first part of this work constructs real positive-genus Gromov-Witten invariants of real-orientable symplectic manifolds of odd "complex" dimensions; the second part studies the orientations on the moduli spaces of real maps used in…

Algebraic Geometry · Mathematics 2015-10-27 Penka Georgieva , Aleksey Zinger

Given a semipositive symplectic manifold, we prove that the pseudocycle genus-zero Gromov-Witten invariants are equal to the polyfold genus-zero Gromov-Witten invariants.

Symplectic Geometry · Mathematics 2023-08-29 Wolfgang Schmaltz

In this paper, we give some new genus-3 universal equations for Gromov-Witten invariants of compact symplectic manifolds. These equations were obtained by studying new relations in the tautological ring of the moduli space of 2-pointed…

Differential Geometry · Mathematics 2015-06-12 Takashi Kimura , Xiaobo Liu

Log Gromov-Witten invariants have recently been defined separately by Gross and Siebert and Abramovich and Chen. This paper provides a dictionary between log geometry and holomorphic exploded manifolds in order to compare Gromov-Witten…

Symplectic Geometry · Mathematics 2012-06-08 Brett Parker

We continue our study of the local Gromov-Witten invariants of curves in Calabi-Yau 3-folds. We define relative invariants for the local theory which give rise to a 1+1-dimensional TQFT taking values in the ring Q[[t]]. The associated…

Algebraic Geometry · Mathematics 2007-05-23 Jim Bryan , Rahul Pandharipande

Let Z_3 act on C^2 by non-trivial opposite characters. Let X =[C^2/Z_3] be the orbifold quotient, and let Y be the unique crepant resolution. We show the equivariant genus 0 Gromov-Witten potentials of X and Y are equal after a change of…

Algebraic Geometry · Mathematics 2007-05-23 Jim Bryan , Tom Graber , Rahul Pandharipande

The orientability problem in real Gromov-Witten theory is one of the fundamental hurdles to enumerating real curves. In this paper, we describe topological conditions on the target manifold which ensure that the uncompactified moduli spaces…

Symplectic Geometry · Mathematics 2013-11-27 Penka Georgieva , Aleksey Zinger

We prove the KKV conjecture expressing Gromov-Witten invariants of K3 surfaces in terms of modular forms. Our results apply in every genus and for every curve class. The proof uses the Gromov-Witten/Pairs correspondence for K3-fibered…

Algebraic Geometry · Mathematics 2017-05-24 R. Pandharipande , R. P. Thomas

The Katz-Klemm-Vafa conjecture expresses the Gromov-Witten theory of K3 surfaces (and K3-fibred 3-folds in fibre classes) in terms of modular forms. Its recent proof gives the first non-toric geometry in dimension greater than 1 where…

Algebraic Geometry · Mathematics 2016-06-09 R. Pandharipande , R. P. Thomas

The purpose of this paper is twofold: first we give a survey on the recent developments of curve counting invariants on Calabi-Yau 3-folds, e.g. Gromov-Witten theory, Donaldson-Thomas theory and Pandharipande-Thomas theory. Next we focus on…

Algebraic Geometry · Mathematics 2015-01-14 Yukinobu Toda

We construct the higher genus Open-Closed Gromov-Witten potential as a solution of the quantum master equation defined up to quantum master isotopy.

Symplectic Geometry · Mathematics 2024-12-06 Vito Iacovino

We study genus 1 Gromov-Witten invariants of Fano complete intersections in the projective spaces. Among other things, we show a reconstruction theorem for genus 1 invariants with only ambient insertions, and compute the genus 1 invariants…

Algebraic Geometry · Mathematics 2022-03-16 Xiaowen Hu

We describe properties of the previously constructed all-genus real Gromov-Witten theory in the style of Kontsevich-Manin's axioms and other classical equations and reconstruction results of complex Gromov-Witten theory.

Algebraic Geometry · Mathematics 2023-11-21 Penka Georgieva , Aleksey Zinger

We calculate the D-brane superpotentials for two Calabi-Yau manifolds with three deformations by the generalized hypergeometric GKZ systems, which give rise to the flux superpotentials $\mathcal{W}_{GVW}$ of the dual F-theory…

High Energy Physics - Theory · Physics 2013-03-06 Feng-Jun Xu , Fu-Zhong Yang

We define the Gromov-Witten invariants for the parabolic bundles over an orbifold $C$ in various situation. Those bring us to refine this notion to get an accurate computation of the number of maximal subbundles of a sufficiently general…

Algebraic Geometry · Mathematics 2017-12-19 Francois Xavier Machu

In analogy with the Gopakumar-Vafa conjecture on CY 3-folds, Klemm and Pandharipande defined GV type invariants on Calabi-Yau 4-folds using Gromov-Witten theory and conjectured their integrality. In this paper, we propose a sheaf-theoretic…

Algebraic Geometry · Mathematics 2022-07-08 Yalong Cao , Davesh Maulik , Yukinobu Toda