# Lorentz and CPT violating Chern-Simons term in the derivative expansion of QED

## Abstract

We calculate, by the method of dimensional regularization and derivative expansion, the one-loop effective action for a Dirac fermion with a Lorentz-violating and CPT-odd kinetic term in the background of a gauge field. We show that this term induces a Chern-Simons modification to Maxwell theory. Some related issues are also discussed. [copyright] [ital 1999] [ital The American Physical Society]

- Authors:

- (Center for Theoretical Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139 (United States))

- Publication Date:

- OSTI Identifier:
- 6272386

- Alternate Identifier(s):
- OSTI ID: 6272386

- Resource Type:
- Journal Article

- Journal Name:
- Physical Review, D

- Additional Journal Information:
- Journal Volume: 60:6; Journal ID: ISSN 0556-2821

- Country of Publication:
- United States

- Language:
- English

- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; CPT THEOREM; FERMIONS; LAGRANGIAN FIELD THEORY; LORENTZ TRANSFORMATIONS; MAXWELL EQUATIONS; QUANTUM ELECTRODYNAMICS; DIFFERENTIAL EQUATIONS; ELECTRODYNAMICS; EQUATIONS; FIELD THEORIES; INVARIANCE PRINCIPLES; PARTIAL DIFFERENTIAL EQUATIONS; QUANTUM FIELD THEORY; TRANSFORMATIONS 662220* -- Quantum Electrodynamics-- (1992-); 662120 -- General Theory of Particles & Fields-- Symmetry, Conservation Laws, Currents & Their Properties-- (1992-)

### Citation Formats

```
Chung, J., and Oh, P.
```*Lorentz and CPT violating Chern-Simons term in the derivative expansion of QED*. United States: N. p., 1999.
Web. doi:10.1103/PhysRevD.60.067702.

```
Chung, J., & Oh, P.
```*Lorentz and CPT violating Chern-Simons term in the derivative expansion of QED*. United States. doi:10.1103/PhysRevD.60.067702.

```
Chung, J., and Oh, P. Wed .
"Lorentz and CPT violating Chern-Simons term in the derivative expansion of QED". United States. doi:10.1103/PhysRevD.60.067702.
```

```
@article{osti_6272386,
```

title = {Lorentz and CPT violating Chern-Simons term in the derivative expansion of QED},

author = {Chung, J. and Oh, P.},

abstractNote = {We calculate, by the method of dimensional regularization and derivative expansion, the one-loop effective action for a Dirac fermion with a Lorentz-violating and CPT-odd kinetic term in the background of a gauge field. We show that this term induces a Chern-Simons modification to Maxwell theory. Some related issues are also discussed. [copyright] [ital 1999] [ital The American Physical Society]},

doi = {10.1103/PhysRevD.60.067702},

journal = {Physical Review, D},

issn = {0556-2821},

number = ,

volume = 60:6,

place = {United States},

year = {1999},

month = {9}

}

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