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Geometric flows of G_2 and Spin(7)-structures

Introductory Workshop: Special Geometric Structures and Analysis September 03, 2024 - September 06, 2024

September 05, 2024 (02:00 PM PDT - 03:00 PM PDT)
Speaker(s): Shubham Dwivedi (University of Waterloo)
Location: SLMath: Eisenbud Auditorium, Online/Virtual
Primary Mathematics Subject Classification No Primary AMS MSC
Secondary Mathematics Subject Classification No Secondary AMS MSC
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Geometric flows of G_2 and Spin(7)-structures

Abstract

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We will discuss a family of flows of G_2-structures on seven dimensional Riemannian manifolds. These flows are negative gradient flows of natural energy functionals involving various torsion components of G_2-structures. We will prove short-time existence and uniqueness of solutions to the flows and a priori estimates for some specific flows in the family. We will discuss analogous flows of Spin(7)-structures. This talk is based on arXiv:2311.05516 (joint work with P. Gianniotis and S. Karigiannis) and arXiv:2404.00870.

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Geometric flows of G_2 and Spin(7)-structures

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