Derivatives as an IR Regulator for Massless Fields

Details Derivatives as an IR Regulator for Massless Fields Derivatives as an IR Regulator for Massless Fields

1995-03-24

arxiv.org/abs/hep-th/9503171v1

Phys.Lett. B352 (1995) 337-345

Physics

High Energy Physics

High Energy Physics - Theory

Latex

Scientific paper

10.1016/0370-2693(95)00540-2

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 standard derivative expansion, which only has a finite number of derivatives in each term, breaks down for small fields when the mass is zero, while the expression obtained here has a well--defined expansion in $\phi$. In this way the resummation of derivatives cures the naive IR divergence. The extension to finite temperature is also discussed.

Affiliated with

Also associated with

No associations

Rating

Derivatives as an IR Regulator for Massless Fields does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Derivatives as an IR Regulator for Massless Fields, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Derivatives as an IR Regulator for Massless Fields will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-95792