Abstract
An approximation scheme for the generating functionals for the Schwinger function is introduced using the expansion of these functionals into series of Laguerre polynomials.
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References
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See, for example, Ref. 3, Theorem 43.3.
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Supported in part by the National Science Foundation, under Grant INT 73-20002 A01.
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Horzela, A., Kapuścik, E. A consistent approximation scheme in QFT. Lett Math Phys 3, 311–313 (1979). https://doi.org/10.1007/BF01821851
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DOI: https://doi.org/10.1007/BF01821851