Skip to main content
Log in

Pseudocoherent-state approximation for quantum field systems

Приближение псевдо-когерентных состояний для систем квантовых полей

  • Published:
Il Nuovo Cimento A (1965-1970)

Summary

By the method of pseudocoherent states (PCS) are derived equations for the first two moments of the scalar fieldU(R) (R={x 1 ,x 2 ,…, x n }). It is shown that forn=1, 2 the regularization of these equations can be done in general form. For the one-dimentional sine-Gordon model the renormalization of the potential in the PCS method is demonstrated to coincide with that obtained earlier by another technique.

Riassunto

Con il metodo degli stati pseudocoerenti (PCS) si derivano le equazioni per i primi due momenti del campo scalareU(R) (R={x 1 ,x 2 ,…, x n }). Si mostra che pern=1, 2 si può compiere la regolarizzazione di queste equazioni in forma generale. Per il modello unidimensionale del seno di Gordon si dimostra che la rinormalizzazione del potenziale nel modello PCS coincide con quella già ottenuta con un’altra tecnica.

Резюме

Используя метод псевдо-когерентных состояний, выводятся уравнения для первых двух моментов скалярного поляU(R) (гдеR={x 1 ,x 2 ,…, x n }). Показывается, что дляn=1, 2 регуляризация этих уравнений может быть произведена в общем виде. Для одномерной модели сайн-Гордона показывается, что перенормировка потенциала с помощью метода псевдо-когерентных состояний совпадает с результатом, полученным ранее с помощью другого метода.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Similar content being viewed by others

References

  1. R. J. Glauber:Proc. S.I.F., Course XLII (New York, N. Y., 1976).

  2. J. A. Malkin andV. J. Man’ko:Dynamical Symmetry and Coherent States of Quantum Systems (Moscow, 1979)

  3. V. A. Namiot andV. Yu. Finkelstein: P. N. Lebedev Institute of Physics, preprint No. 53 (1979).

  4. V. A. Namiot andV. Yu. Finkelstein:Ž. Ėksp. Teor. Fiz.,77, 884 (1979).

    Google Scholar 

  5. N. N. Bogolubov andD. V. Shirkov:Introduction to the Theory of Quantized Fields (Moscow, 1976).

  6. V. E. Korepin andL. D. Faddeev:Theor. Math. Phys. (USSR),25, 147 (1975).

    Article  MathSciNet  Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Additional information

Traduzione a cura della Redazione.

Переведено редакцией.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Finkelstein, V.Y., Namiot, V.A. Pseudocoherent-state approximation for quantum field systems. Nuov Cim A 69, 133–138 (1982). https://doi.org/10.1007/BF02902650

Download citation

  • Received:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/BF02902650

Navigation