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Is there any gravitational field outside a black hole?

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Lettere al Nuovo Cimento (1971-1985)

Conclusion

“ Singularities ” are finite closed regions in space-time rather than points and a physical system forgets completely its past (black-out of information) once it is inside this closed region. Furthermore, we do not expect to measure a gravitational or electric field outside a singular region because of the change of topology and it is not possible to measure physical quantities defined on another region with different topology.

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References

  1. S. W. Hawking:Comrn. Math. Phys.,25, 199 (1975).

    Article  MathSciNet  ADS  Google Scholar 

  2. V. De Sabbata, M. Pavsic andE. Recami:Lett. Nuovo Cimcnto,19, 144 (1977);

    Google Scholar 

  3. V. De Sabbata: inTachyons, Monopoles and Related Topics, edited byE. Recami (Amsterdam, {dy1978}).

  4. N. Rosen: inRelativity, edited byM. Carmeli, S. L. Fickler andL. Witten (New York, N. Y., {dy1970}).

  5. K. Tahir Shah:Lett. Nuovo Cimento,18, 156 (1977); see alsoTachyons and quasi-calaslrophe theory, inTachyons, Monopoles, and Related Topics, edited byE. Recami (Amsterdam, 1978).

    Article  Google Scholar 

  6. K. Tahir Shah andW. Youtrgrau:On some logico-mathemalical questions in physical theories, to be published

  7. K. Tahir Shah:A mathematical model of physical theories and its applications, to appear

  8. R. Geroch:e.g., inRelativity, edited byM. Cabmeli, S. L. Fickler andL. Witten (New York, N. Y., {dy1970}).

  9. W. F. Lawvere: inAlgebra, Topology and Category Theory, A collection of papers in honour of S. Eilenberg, edited byA. Heller andM. Tierney (New York, N. Y., {dy1976}).

  10. R. K. Sachs andH. Wu:Bull. Amer. Math. Soc,83, 1101 (1977); andGravitation, edited byC. W. Misner, K. S. Thorne andJ. A. Wheeler (San Francisco, Cal., 1973) pag. 843.412

    Article  MathSciNet  MATH  Google Scholar 

  11. J. Kiskis:Phys. Rev. D,17, 3196 (1978).

    Article  MathSciNet  ADS  Google Scholar 

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Authors and Affiliations

  1. Istituto di Fisica dell’ Università, Bologna, Italia

    V. De Sabbata

  2. Istituto di Fisiea dell’ Università, Ferrara, Italia

    V. De Sabbata

  3. Department of Mathematics, Alfateh University, Tripoli, Libya

    K. Tahik Shah

Authors
  1. V. De Sabbata
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  2. K. Tahik Shah
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De Sabbata, V., Shah, K.T. Is there any gravitational field outside a black hole?. Lett. Nuovo Cimento 23, 409–412 (1978). https://doi.org/10.1007/BF02787000

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