Summary
By using the de Rham-Yano-Bochner lemma on harmonic tensor fields in a compact orientable manifold, we show that the extra dimensions in eleven-dimensional simple supergravity will he Ricci-flat if they are compact.
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References
E. Cremmer, B. Julia andJ. Scherk:Phys. Lett. B,76, 409 (1978).
P. G. O. Freund andM. A. Rubin:Phys. Lett. B,97, 233 (1980).
F. Englert:Phys. Lett. B,119, 339 (1982).
M. A. Awada, M. J. Duff andC. N. Pope:Phys. Rev. Lett.,50, 294 (1983);M. J. Duff,B. E. W. Nillson andC. N. Pope:Phys. Rev. Lett.,50, 2043 (1983).
G. de Rham:Ann. Univ. Grenoble,23, 55 (1947).
K. Yano:Ann. Math.,55, 328 (1952).
S. Bachner:Bull. Am. Math. Soc., 334 (1937).
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Partially supported by the National Science Counil of the Republic of China under contract number NSC-73-0208-M008-04.
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Chen, MQ., Chern, DC., Hsu, RR. et al. The extra dimensions of the eleven-dimensional simple supergravity are ricci-flat if they are compact. Lett. Nuovo Cimento 41, 170–172 (1984). https://doi.org/10.1007/BF02747268
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DOI: https://doi.org/10.1007/BF02747268