• DOI:10.1103/PhysRevD.71.066005
• Corpus ID: 14371106

Gauged D = 7 supergravity on the S 1 / Z 2 orbifold

@article{Avramis2004GaugedD,
  title={Gauged D = 7 supergravity on the S 1 / Z 2 orbifold},
  author={Spyros D. Avramis and Alexandros A. Kehagias},
  journal={Physical Review D},
  year={2004},
  volume={71},
  pages={066005}
}

• Spyros D. Avramis, A. Kehagias
• Published 26 July 2004
• Physics
• Physical Review D

We construct the most general couplings of a bulk seven-dimensional Yang-Mills-Einstein $\mathcal{N}=2$ supergravity with a boundary six-dimensional chiral $\mathcal{N}=(0,1)$ theory of vectors and charged hypermultiplets. The boundary consists of two brane worlds sitting at the fixed points of an ${\mathbf{S}}^{1}/{\mathbb{Z}}_{2}$ compactification of the seven-dimensional bulk supergravity. The resulting 6D massless spectrum surviving the orbifold projection is anomalous. By introducing boundary fields at the orbifold fixed points, we show that all anomalies are canceled by a Green-Schwarz mechanism. In addition, all couplings of the boundary fields to the bulk are completely specified by supersymmetry. We emphasize that there is no bulk Chern-Simons term to cancel the anomalies. The latter is traded for a Green-Schwarz term which emerges in the boundary theory after a duality transformation implemented to construct the bulk supergravity.