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The spinorial energy functional: solutions of the gradient flow on Berger spheres

Wittmann, Johannes


We study the negative gradient flow of the so-called spinorial energy functional on 3-dimensional Berger spheres. For a certain class of spinors we show that the Berger spheres collapse to a 2-dimensional sphere. Moreover, for special cases, we prove that the volume-normalized standard 3-sphere together with a Killing spinor is a stable critical point of the volume-normalized version of the flow.

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