Abstract
We define the vacuum expectation value of the time-ordered product of two exponentials of free fields as a distribution using minimal singularity as a criterion. The implication of this definition for an exponentially self-coupled scalar field is studied in second order of a perturbation expansion.
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Okubo, S.: Prog. Theor. Phys.11, 80 (1954).
Volkov, M. K.: Commun. Math. Phys.7, 289 (1968) and15, 69 (1969).
Filippov, A. T.: Partial symmetry, equivalence theorems and calculation of higher orders in non-renormalizable field theory. DUBNA preprint (1968).
Efimov, G. V.: Review of methods in non-linear quantum field theory. CERN preprint (1969) and references quoted there.
Delbourgo, R., Salam, A., Strathdee, J.: Phys. Rev.187, 1999 (1969); Salam, A.: Nonpolynomial Lagrangian theories, Trieste preprint (1970), to appear in the Proceedings of the Coral Gables Conference 1970.
Lee, B. W., Zumino, B.: Nuclear Phys. B13, 671 (1969).
Keck, B. W., Taylor, J. G.: Renormalization of non-polynomial Lagrangians. University of Southampton preprint (1970).
Jaffe, A.: Phys. Rev. Letters17, 661 (1966), Phys. Rev.158, 1454 (1967).
Wightman, A. S.: Phys. Rev.101, 860 (1956).
Gelfand, I. M., Schilow, G. E.: Verallgemeinerte Funktionen I. Berlin: VEB Deutscher Verlag der Wissenschaften 1960.
Karowski, M.: To be published.
Erdélyi, A.: Higher transcendental functions, Vol. I. New York: McGraw-Hill, Inc. 1953.
Bogoliubov, N. N., Shirkov, D. V.: Introduction to the theory of quantized fields. New York: Interscience Publ., Inc. 1959
Lehmann, H., Pohlmeyer, K.: To appear in the Proceedings of the Second International Symposium on non-local Quantum Field Theory, Azau, USSR (1970).
Epstein, H., Glaser, V., Martin, A.: Commun. Math. Phys.13, 257 (1969).
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Lehmann, H., Pohlmeyer, K. On the superpropagator of fields with exponential coupling. Commun.Math. Phys. 20, 101–110 (1971). https://doi.org/10.1007/BF01646529
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DOI: https://doi.org/10.1007/BF01646529