Anomaly flows

DH Phong, S Picard, X Zhang - arXiv preprint arXiv:1610.02739, 2016 - arxiv.org
The Anomaly flow is a flow which implements the Green-Schwarz anomaly cancellation
mechanism originating from superstring theory, while preserving the conformally balanced …

Some recent developments in Kähler geometry and exceptional holonomy

S Donaldson - Proceedings of the International Congress of …, 2018 - World Scientific
This article is a broad-brush survey of two areas in differential geometry. While these two
areas are not usually put side-by-side in this way, there are several reasons for discussing …

Laplacian flow of homogeneous ‐structures and its solitons

J Lauret - Proceedings of the London Mathematical Society, 2017 - Wiley Online Library
We use the bracket flow/algebraic soliton approach to study the Laplacian flow of G 2‐
structures and its solitons in the homogeneous case. We prove that any homogeneous …

Flows of -structures, II: Curvature, torsion, symbols, and functionals

S Dwivedi, P Gianniotis, S Karigiannis - arXiv preprint arXiv:2311.05516, 2023 - arxiv.org
We continue the investigation of general geometric flows of $ G_2 $-structures initiated by
the third author in" Flows of $ G_2 $-structures, I." Specifically, we determine the possible …

Geometric flows for the type IIA string

T Fei, DH Phong, S Picard, X Zhang - arXiv preprint arXiv:2011.03662, 2020 - arxiv.org
A geometric flow on $6 $-dimensional symplectic manifolds is introduced which is motivated
by supersymmetric compactifications of the Type IIA string. The underlying structure turns out …

Stability of torsion-free structures along the Laplacian flow

JD Lotay, Y Wei - Journal of Differential Geometry, 2019 - projecteuclid.org
We prove that torsion-free $\mathrm {G} _2 $ structures are (weakly) dynamically stable
along the Laplacian flow for closed $\mathrm {G} _2 $ structures. More precisely, given a …

Geometric flows and their solitons on homogeneous spaces

J Lauret - arXiv preprint arXiv:1507.08163, 2015 - arxiv.org
We develop a general approach to study geometric flows on homogeneous spaces. Our
main tool will be a dynamical system defined on the variety of Lie algebras called the …

A flow of conformally balanced metrics with Kähler fixed points

DH Phong, S Picard, X Zhang - Mathematische Annalen, 2019 - Springer
While the Anomaly flow was originally motivated by string theory, its zero slope case is
potentially of considerable interest in non-Kähler geometry, as it is a flow of conformally …

Laplacian solitons: questions and homogeneous examples

J Lauret - Differential Geometry and its Applications, 2017 - Elsevier
We give the first examples of closed Laplacian solitons which are shrinking, and in particular
produce closed Laplacian flow solutions with a finite-time singularity. Extremally Ricci …

A Gradient Flow of Isometric -Structures

S Dwivedi, P Gianniotis, S Karigiannis - The Journal of Geometric Analysis, 2021 - Springer
We study a flow of G _2 G 2-structures that all induce the same Riemannian metric. This
isometric flow is the negative gradient flow of an energy functional. We prove Shi-type …