Low momentum transfer theorem for two photon exchange in lepton hadron scattering: J. A. Peñarrocha and J. Bernabéu. Department of Theoretical Physics, Faculty of Physics, University of Valencia, Valencia, Spain
- Publisher
- Elsevier Science
- Year
- 1981
- Tongue
- English
- Weight
- 69 KB
- Volume
- 134
- Category
- Article
- ISSN
- 0003-4916
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✦ Synopsis
ABSTRACTS OF PAPERS TO APPEAR IN FUTURE ISSUES
type kinetic terms). It turns out that two different theories exist in the first order formulation, both SU(1,4) 0 U(1) gauge invariant and supersymmetric. Going to the second order formalism the two theories become identical and the spin 1 kinetic term is generated. The dichotomy present in the first order version of the theory may be of some importance for quantization. The introduction of a cosmological constant and the reintroduction of the noncontracted group SU(2, 2/l) is trivial in this approach as in N = 1 supergravity. At the end of the paper we explicitly exhibit the de Sitter version of the theory. It must be noted that this is only the second example of a completely pure geometrical supersymmetric theory known to date. By pure we mean that no other field except the Lie Algebra valued lform potential is needed.