Induced Lorentz-Violating Chern-Simons Term in QED and Anomalous Contributions to Effective Action Expansions

Details Induced Lorentz-Violating Chern-Simons Term in QED and Anomalous Contributions to Effective Action Expansions Induced Lorentz-Violating Chern-Simons Term in QED and Anomalous Contributions to Effective Action Expansions

1999-07-14

arxiv.org/abs/hep-ph/9907349v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages

Scientific paper

I present a unified formulation of anomalous contributions in quantum field theories by calculating directly the effective action using the background field and covariant-derivative expansion technique. I use this method to determine uniquely the induced Chern-Simons term from the a Lorentz and CPT violating term in fermion QED Lagrangian. The outstanding ambiguity is resolved by properly taken into account the noncommutivity of $A$ and $\partial$. The resulting vacuum polarization tensor acquires a non-Feynman diagram anomalous contribution which accounts for the discrepancy between the present calculation and the other calculations.

Affiliated with

Also associated with

No associations

Rating

Induced Lorentz-Violating Chern-Simons Term in QED and Anomalous Contributions to Effective Action Expansions 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 Induced Lorentz-Violating Chern-Simons Term in QED and Anomalous Contributions to Effective Action Expansions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Induced Lorentz-Violating Chern-Simons Term in QED and Anomalous Contributions to Effective Action Expansions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-336112