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Derivatives as an IR regulator for massless fields

The free propagator for the scalar \lambda \phi^4--theory is calculated exactly up to the second derivative of a background field. Using this propagator I compute the one--loop effective action, which then contains all powers of the field but with at most two derivatives acting on each field. The st...

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Detalles Bibliográficos
Autor principal: Elmfors, Per
Lenguaje:eng
Publicado: 1995
Materias:
Acceso en línea:https://dx.doi.org/10.1016/0370-2693(95)00540-2
http://cds.cern.ch/record/279129