Induced Lorentz-Violating Chern-Simons Term in QED and Anomalous Contributions to Effective Action Expansions
| dc.creator | Chan, Lai-Him | |
| dc.date | 1999-07-14 | |
| dc.date | 2000-08-23 | |
| dc.date.accessioned | 2026-07-07T04:07:37Z | |
| dc.date.available | 2026-07-07T04:07:37Z | |
| dc.description | 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. | |
| dc.description | 8 pages | |
| dc.identifier | https://arxiv.org/abs/hep-ph/9907349 | |
| dc.identifier | http://arxiv.org/abs/hep-ph/9907349 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/49211 | |
| dc.subject | High Energy Physics - Phenomenology | |
| dc.title | Induced Lorentz-Violating Chern-Simons Term in QED and Anomalous Contributions to Effective Action Expansions | |
| dc.type | text |