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Conformal invariance in quantum mechanics

Конформная инвариантность в квантовой механике

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Il Nuovo Cimento A (1965-1970)

Summary

The properties of a field theory in one over-all time dimension, invariant under the full conformal group, are studied in detail. A compact operator, which is not the Hamiltonian, is diagonalized and used to solve the problem of motion, providing a discrete spectrum and normalizable eigenstates. The role of the physical parameters present in the model is discussed, mainly in connection with a semi-classical approximation.

Riassunto

Si studiano le proprietà di una teoria invariante conforme in cui il «campo» dipende solo da una dimensione temporale. Un operatore compatto, che non coincide con l’hamiltoniana, è diagonalizzato ed usato per risolvere il problena del moto. Esso ha uno spettro discreto ed autostati normalizzabili. Si discute il ruolo dei parametri fisici del modello, anche in rapporto ad un’approssimazione semiclassica.

Резюме

В случае одного временного измерения подробно обсуждаются свойства теории поля, инвариантной относительно полностью конформной группы. Диагонализуется компактиый оператор, который не является Гамильтонианом. Этот оператор используется для решения проблемы движения в случае дискретного спектра и нормализуемых собственных состояний. Обсуждается роль физических параметров, присутствующих в модели, в основном, в связи с полуклассическим приближением.

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References

  1. A sample of recent developments, with abundant references to previous work, is contained in:Scale and Conformal Symmetry in Hadron Physics, edited byR. Gatto (New York, N. Y., 1973); see alsoS. Ferrara, R. Gatto andA. F. Grillo:Conformal Algebra in Space-Time (Berlin, 1973). Earlier references can also be found in the beautiful paper byG. Mack andA. Salam:Ann. of Phys.,53, 174 (1969).

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  2. S. Fubini:Nuovo Cimento,34 A, 521 (1976).

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  3. For one of the first examples, see,e.g. A. Bastai, L. Bertocchi, S. Fubini, G. Furlan andM. Tonin:Nuovo Cimento,30, 1512 (1963).

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  4. See, for instance,B. G. Wybourne:Classical Groups for Physicists (New York, N. Y., 1974).

  5. Ch. P. Boyer andK. B. Wolf:Communicaciones Tecnicas, Vol.6, Serie B, No. 104 (1975).

  6. For instance,G. Herzberg:Atomic Spectra and Atomic Structure (New York, N. Y., 1937).

  7. See,e.g.,A. Erdélyi, W. Magnus, F. Oberhettinger andF. G. Tricomi:Bateman Manuscript Project, Higher Transcendentals Function, Vol.1 (New York, N. Y., 1953).

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de Alfaro, V., Fubini, S. & Furlan, G. Conformal invariance in quantum mechanics. Nuov Cim A 34, 569–612 (1976). https://doi.org/10.1007/BF02785666

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  • DOI: https://doi.org/10.1007/BF02785666

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