Abstract
We study existence and non-existence of constant scalar curvature metrics conformal and arbitrarily close to homogeneous metrics on spheres, using variational techniques. This describes all critical points of the Hilbert–Einstein functional on such conformal classes, near homogeneous metrics. Both bifurcation and local rigidity type phenomena are obtained for 1-parameter families of U(n + 1), Sp(n + 1) and Spin(9)-homogeneous metrics.
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Communicated by P. Rabinowitz.
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Bettiol, R.G., Piccione, P. Bifurcation and local rigidity of homogeneous solutions to the Yamabe problem on spheres. Calc. Var. 47, 789–807 (2013). https://doi.org/10.1007/s00526-012-0535-y
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DOI: https://doi.org/10.1007/s00526-012-0535-y