Abstract
We consider biharmonic maps \(\phi :(M,g)\rightarrow (N,h)\) from a complete Riemannian manifold into a Riemannian manifold with non-positive sectional curvature. Assume that \( p \) satisfies \( 2\le p <\infty \). If for such a \( p \), \(\int _M|\tau (\phi )|^{ p }\,\mathrm{d}v_g<\infty \) and \(\int _M|\,\mathrm{d}\phi |^2\,\mathrm{d}v_g<\infty ,\) where \(\tau (\phi )\) is the tension field of \(\phi \), then we show that \(\phi \) is harmonic. For a biharmonic submanifold, we obtain that the above assumption \(\int _M|\,\mathrm{d}\phi |^2\,\mathrm{d}v_g<\infty \) is not necessary. These results give affirmative partial answers to the global version of generalized Chen’s conjecture.
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The author would like to express his gratitude to the referee for many useful comments.
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Supported by the Grant-in-Aid for Research Activity Start-up, No. 25887044, Japan Society for the Promotion of Science.
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Maeta, S. Biharmonic maps from a complete Riemannian manifold into a non-positively curved manifold. Ann Glob Anal Geom 46, 75–85 (2014). https://doi.org/10.1007/s10455-014-9410-8
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DOI: https://doi.org/10.1007/s10455-014-9410-8
Keywords
- Biharmonic maps
- Biharmonic submanifolds
- Biharmonic hypersurfaces
- Chen’s conjecture
- Generalized Chen’s conjecture