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Il Nuovo Cimento A Series 11

, Volume 56, Issue 2, pp 229–235 | Cite as

The decay of coherent rotational states subject to random quantum measurements

  • L. Fonda
  • N. Mankoč-Borštnik
  • M. Rosina
Article

Summary

The influence of the measurement apparatus on the γ-decay of coherent rotational states is discussed. It is shown that the mathematical procedure, which has been devised to describe the decay of an unstable particle characterized by a unique quantum state, applies, with suitable changes, also to this case. For very short times, the decay probability still shows the pulses discussed in a previous paper where the influence of the environment was not taken into account. For long times, the interaction with the environment enforces a superposition of exponentials for the decay probability.

Keywords

Tempo Coherent State Decay Product Rotational Band Unstable System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Riassunto

In questo lavoro si discute l’influenza dell’apparato di misura sul decadimento γ degli stati rotazionali coerenti. La procedura usata per la discussione del decadimento di una particella instabile caratterizzata da uno stato unico può esser estesa, con opportuni cambiamenti, pure a coprire questo caso. Per piccoli tempi, la probabilità di decadimento presenta le stesse fluttuazioni discusse in un altro lavoro dove l’influenza dell’ambiente non era stata presa in considerazione. Per tempi lunghi, l’interazione con l’ambiente produce come legge di decadimento una sovrapposizione di esponenziali.

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References

  1. (1).
    See, for example,L. Fonda, G. C. Ghirardi andA. Rimini:Rep. Prog. Phys.,41, 587 (1978), and references contained therein.CrossRefADSGoogle Scholar
  2. (2).
    L. Fonda andG. C. Ghirardi:Nuovo Cimento A,67, 257 (1970);6, 553 (1971).CrossRefADSGoogle Scholar
  3. (3).
    N. Mankoč-Borštnik, M. Rosina andL. Fonda:Nuovo Cimento A,53, 440 (1979).ADSGoogle Scholar
  4. (4).
    P. W. Atkins andJ. C. Dobson:Proc. R. Soc. London Ser. A,321, 321 (1971).ADSMathSciNetCrossRefGoogle Scholar

Copyright information

© Società Italiana di Fisica 1980

Authors and Affiliations

  • L. Fonda
    • 1
    • 2
  • N. Mankoč-Borštnik
    • 3
  • M. Rosina
    • 3
  1. 1.International Centre for Theoretical PhysicsTriesteItaly
  2. 2.Istituto di Fisica Teorica dell’UniversitàTriesteItalia
  3. 3.Faculty of Natural Sciences and Technology, and J. Stefan InstituteUniversity E. KardeljLjubljanaYugoslavia

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