Gupta-Bleuler and infrared-coherence subsidiary conditions

Daniel Zwanziger

    Research output: Contribution to journalArticlepeer-review


    It is verified that the contradiction between the Gupta-Bleuler condition k ain(k)=0=k aout(k)=0 and the natural infrared-coherence condition, lim0ain(k)=-ieipi[(2)32 (Ei-pi)]-1, is present when the quantized electromagnetic field is coupled to an external classical current. A recent contention of Professor Haller is disproven by displaying the Lehmann-Symanzik-Zimmermann limit of this simple soluble model. Three different resolutions of the dilemma posed by the above contradiction are presented.

    Original languageEnglish (US)
    Pages (from-to)3051-3054
    Number of pages4
    JournalPhysical Review D
    Issue number8
    StatePublished - 1978

    ASJC Scopus subject areas

    • Physics and Astronomy (miscellaneous)


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