Abstract
We show that a compact Ricci soliton is rigid if and only if the Weyl conformal tensor is harmonic. In the complete noncompact case we prove the same result assuming that the curvature tensor has at most exponential growth and the Ricci tensor is bounded from below.
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Supported by projects MTM2009-07756 and INCITE09 207 151 PR (Spain).
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Fernández-López, M., García-Río, E. Rigidity of shrinking Ricci solitons. Math. Z. 269, 461–466 (2011). https://doi.org/10.1007/s00209-010-0745-y
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DOI: https://doi.org/10.1007/s00209-010-0745-y