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Damping effects on the coherence term and wave packet reduction

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Il Nuovo Cimento B (1971-1996)

Summary

We analyse the damping effects of devices such as an rf-coil and Ge or Bi crystals on the interference fringes in the interference-type experiments. We investigate them in terms of the interaction between the device and the wave packets. We also consider the fluctuations deriving from the macroscopic characteristics of devices, and analyse the damping effects. The visibilities of the interference fringes are calculated and compared with the results of the neutron interference experiment. We get reliable results which indicate the tendency of the results measured by the Missouri-Columbia group and it is certain that our method is more suitable in order to investigate experiments such as those which make use of wave packets. The intensity of the wave packet is also discussed. The difference between the intensity of a beam made up of several single plane waves and the intensity of a real wave packet such as the one describing pulsed neutrons is pointed out.

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References

  1. For instance,S. Machida andM. Namiki:Prog. Theor. Phys.,63, 1457 1833 (1980);H. Araki:Prog. Theor. Phys.,64, 719 (1980);M. Namiki:Found. Phys.,18, 29 (1988);Y. Morikawa, M. Namiki andY. Otake:Prog. Theor. Phys.,78, 951 (1987).

    Article  ADS  Google Scholar 

  2. M. Namiki, Y. Otake andH. Soshi:Prog. Theor. Phys.,77, 508 (1987).

    Article  ADS  Google Scholar 

  3. R. Fukuda:Phys. Rev. A,35, 8 (1987);36, 3023 (1987).

    Article  ADS  Google Scholar 

  4. G. Badrek, H. Rauch andJ. Summhammer:Phys. Rev. Lett.,51, 1015 (1983).

    Article  ADS  MATH  Google Scholar 

  5. C. Dewdney, Ph. Gueret, A. Kyprianidis andJ. P. Vigier:Phys. Lett. A,102, 291 (1984).

    Article  ADS  Google Scholar 

  6. Originally, M. Namiki indicated to analyze the effect of wave packet on the wave packet reduction to us.

  7. H. Kaiser, S. A. Werner andE. A. George:Phys. Rev. Lett.,50, 560 (1983).

    Article  ADS  MATH  Google Scholar 

  8. M. Heinrich, H. Rauch andH. Wolwitsch:Physica, B,156,157, 588 (1989).

    Article  ADS  Google Scholar 

  9. H. Rauch, E. Seidl, D. Tuppinger, D. Petrascheck andR. Scherm:Z. Phys. B,69, 313 (1987).

    Article  ADS  Google Scholar 

  10. R. J. Glauber: inLectures in Theoretical Physics, edited byW. E. Brittin andL. G. Dunham (Interscience Publishers, Inc., New York, N.Y., 1959), p. 135.

    Google Scholar 

  11. This procedure is based on the suggestion by M. Namiki.

  12. L. I. Schiff:Quantum Mechanics, 2nd. ed. (McGraw-Hill, New York, N.Y., 1955), p. 54.

    MATH  Google Scholar 

  13. A. G. Klein, G. I. Opat andW. A. Hamilton:Phys. Rev. Lett.,50, 563 (1983).

    Article  ADS  Google Scholar 

  14. G. Comsa:Phys. Rev. Lett. 51, 1105 (1983);H. Kaiser, S. A. Werner andE. A. George:Phys. Rev. Lett.,51, 1106 (1983).

    Article  ADS  Google Scholar 

  15. For instance,C. O. Alley:Proceedings of the International Symposium on Foundation of Quantum Mechanics-In the Light of New Technology, ISQM, Tokyo '83, edited byS. Kamefuchi et al. (Phys. Soc. Japan, Tokyo, 1984).

  16. T. Ebisawa: KEK Report (1989); 89-13P.33 (in Japanese);Y. Yamada, T. Ebisawa, N. Achiwa, T. Akiyoshi andS. Okamoto:Annu. Rep. Res. React. Inst. Kyoto Univ.,11, 8 (1978).

  17. M. Gruber, K. Eder, A. Zeilinger, R. Gähler andW. Mampe:Phys. Lett. A,140, 363 (1989).

    Article  ADS  Google Scholar 

  18. Suggested by M. Namiki.

  19. Y. Murayama: private communication;Y. Murayama andM. Namiki:Proceedings of the III International Meeting on Epistemology, edited byE. I. Bitsakis andC. A. Nikolaides (Kluwer Academic Publishers, Dordrecht, 1989).

    Google Scholar 

  20. S. Pascazio suggested to present our results in terms of the visibility.

  21. H. Rauch:Lecture Note of Bangalore Meeting (1984);H. Rauch: inOpen Questions in Quantum Physics, edited byG. Tarozzi andA. van der Merwe (D. Reidel Publishing Company, Dordrecht, 1985), p. 345.

  22. H. Rauch: inNeutron Interferometry, edited byU. Bonse andH. Rauch (Clarendon Press, Oxford, 1979), p. 161.

    Google Scholar 

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Morikawa, Y., Otake, Y. Damping effects on the coherence term and wave packet reduction. Nuov Cim B 105, 507–524 (1990). https://doi.org/10.1007/BF02722883

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