Abstract
Using only general considerations such as translation invariance, positive definite energy spectrum and gauge invariance, spectral representations have been set up for the vacuum expectation values of two photon and two electron operators in electrodynamics. The gauge dependence of such quantities is thus clearly exhibited, particularly that of equal time commutators and of propagators. Certain constants, related to the renormalization constants, integrals of the spectral functions are defined and shown to be gauge invariant. The generalized Ward identity is established in any gauge.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
