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most citedTopological Lattice Models in Four Dimensions

382 citations

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18 papers · 1 filter

math.DG2020★ 4 cited

A lattice version of the Atiyah-Singer index theorem

Mayuko Yamashita

We formulate and prove a lattice version of the Atiyah-Singer index theorem. The main theorem gives a -theoretic formula for an index-type invariant of operators on lattice appr…

math.DG2019★ 25 cited

The Atiyah-Patodi-Singer index and domain-wall fermion Dirac operators

Hidenori Fukaya, Mikio Furuta, Shinichiroh Matsuo +3

We introduce a mathematician-friendly formulation of the physicist-friendly derivation of the Atiyah-Patodi-Singer index of our previous paper. Our viewpoint sheds some new light o…

math.DG2019★ 10 cited

The Hitchin--Kobayashi Correspondence for Quiver Bundles over Generalized Kähler Manifolds

Zhi Hu, Pengfei Huang

In this paper, we establish the Hitchin--Kobayashi correspondence for the -holomorphic quiver bundle over a compact generalized Kähler manifold $(X, I_+,…

math.DG2019★ 4 cited

Triply Periodic Monopoles and Difference Modules on Elliptic Curves

Takuro Mochizuki

We explain the correspondences between twisted monopoles with Dirac type singularity and polystable twisted mini-holomorphic bundles with Dirac type singularity on a 3-dimensional…

math.DG2019★ 13 cited

Good Wild Harmonic Bundles and Good Filtered Higgs Bundles

Takuro Mochizuki

We prove the Kobayashi-Hitchin correspondence between good wild harmonic bundles and polystable good filtered -flat bundles satisfying a vanishing condition. We also study the c…

math.DG2019★ 5 cited

Ricci iteration for coupled Kähler-Einstein metrics

Ryosuke Takahashi

In this paper, we introduce the "coupled Ricci iteration", a dynamical system related to the Ricci operator and twisted Kähler-Einstein metrics as an approach to the study of coupl…

math.DG2018★ 2 cited

Convergence of mean curvature flow in hyperkähler manifolds

Keita Kunikawa, Ryosuke Takahashi

Inspired by the work of Leung-Wan, we study the mean curvature flow in hyperkähler manifolds starting from hyper-Lagrangian submanifolds, a class of middle dimensional submanifolds…

math.DG2018

An -index formula of monopoles with Dirac-type singularities

Masaki Yoshino

We prove the Fredholmness of Dirac operators of monopoles with Dirac-type singularities on oriented complete Riemannian -folds, and we also calculate the -indices of them.

math.DG2017★ 6 cited

Periodic monopoles and difference modules

Takuro Mochizuki

We study periodic monopoles satisfying some mild conditions, called of GCK type. Particularly, we give a classification of periodic monopoles of GCK type in terms of difference mod…

math.DG2017★ 3 cited

Kobayashi-Hitchin correspondence for analytically stable bundles

Takuro Mochizuki

We prove the existence of a Hermitian-Einstein metric on holomorphic vector bundles with a Hermitian metric satisfying the analytic stability condition, under some assumption for t…

math.DG2017★ 8 cited

Some characterizations of Dirac type singularity of monopoles

Takuro Mochizuki, Masaki Yoshino

We study singular monopoles on open subsets in the -dimensional Euclidean space. We give two characterizations of Dirac type singularities. One is given in terms of the growth o…

math.DG2015★ 48 cited

Asymptotic behaviour of certain families of harmonic bundles on Riemann surfaces

Takuro Mochizuki

Let be a stable Higgs bundle of degree on a compact connected Riemann surface. Once we fix the flat metric on the determinant of …

math.DG2013★ 13 cited

Asymptotic behaviour and the Nahm transform of doubly periodic instantons with square integrable curvature

Takuro Mochizuki

We study the asymptotic behaviour of doubly periodic instantons with square-integrable curvature. Then, we establish the equivalence given by the Nahm transform between the doubly…

math.DG2008★ 107 cited

Wild Harmonic Bundles and Wild Pure Twistor D-modules

Takuro Mochizuki

We study (i) asymptotic behaviour of wild harmonic bundles, (ii) the relation between semisimple meromorphic flat connections and wild harmonic bundles, (iii) the relation between…

math.DG2006★ 38 cited

Visible actions on symmetric spaces

Toshiyuki Kobayashi

A visible action on a complex manifold is a holomorphic action that admits a -transversal totally real submanifold . It is said to be strongly visible if there exists an orbi…

math.DG2006★ 10 cited

On discontinuous group actions on non-Riemannian homogeneous spaces

Toshiyuki Kobayashi

This article gives an up-to-date account of the theory of discrete group actions on non-Riemannian homogeneous spaces. As an introduction of the motifs of this article, we begin by…

math.DG2006★ 31 cited

Deformation of Properly Discontinuous Actions of Z^k on R^{k+1}

Toshiyuki Kobayashi, Salma Nasrin

We consider the deformation of a discontinuous group acting on the Euclidean space by affine transformations. A distinguished feature here is that even a `small' deformation of a d…

math.DG2006★ 82 cited

Kobayashi-Hitchin correspondence for tame harmonic bundles II

Takuro Mochizuki

Let be a smooth projective complex variety with an ample line bundle , and let be a simple normal crossing divisor. We establish the Kobayashi-Hitchin correspondence bet…