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Pseudo-locality for a coupled Ricci flow

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arxiv 1510.04332 v3 pith:G3G5JJL6 submitted 2015-10-14 math.DG

classification math.DG
keywords riccicoupledflowpseudo-localitysolutiontypebasecomplete
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abstract

Let $(M,g,\phi)$ be a solution to the Ricci flow coupled with the heat equation for a scalar field $\phi$. We show that a complete, $\kappa$-noncollapsed solution $(M,g,\phi)$ to this coupled Ricci flow with a Type I singularity at time $T<\infty$ will converge to a non-trivial Ricci soliton after parabolic rescaling, if the base point is Type I singular. A key ingredient is a version of Perelman pseudo-locality for the coupled Ricci flow.

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