DYONIC MASSES FROM CONFORMAL FIELD STRENGTHS IN D EVEN DIMENSIONS
| Autor: | Sergio Ferrara, Riccardo D'Auria |
|---|---|
| Rok vydání: | 2005 |
| Předmět: |
Physics
High Energy Physics - Theory Nuclear and High Energy Physics Particle physics Compactification (physics) Antisymmetric relation Supergravity FOS: Physical sciences Conformal map Superspace Quantum number High Energy Physics::Theory High Energy Physics - Theory (hep-th) Antisymmetric tensor Gauge theory Particle Physics - Theory Mathematical physics |
| Popis: | We show that D/2--form gauge fields in D even dimensions can get a mass with both electric and magnetic contributions when coupled to conformal field--strengths whose gauge potentials is are \frac {D-2}{2}- forms. Denoting by e^I_\L and m^{I\L} the electric and magnetic couplings, gauge invariance requires: e^I_\L m^{J\L}\mp e^J_\L m^{I\L}=0, where I,\L= 1... m denote the species of gauge potentials of degree D/2 and gauge fields of degree D/2-1, respectively. The minus and plus signs refer to the two different cases D=4n and D=4n+2 respectively and the given constraints are respectively {\rm {Sp}}(2m) and {\rm {O}}(m,m) invariant. For the simplest examples, (I,\L=1 for D=4n and I,\L=1,2 for D=4n+2) both the e,m quantum numbers contribute to the mass \m=\sqrt {e^2 +m^2} . This phenomenon generalizes to $D$ even dimensions the coupling of massive antisymmetric tensors which appear in D=4 supergravity Lagrangians which derive from flux compactifications in higher dimensions. For D=4 we give the supersymmetric generalization of such couplings using N=1 superspace. Comment: 11 pages, LaTeX source, typos corrected. Version to appear on Phys.Lett.B |
| Databáze: | OpenAIRE |
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