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arXiv · 0706.0398

Fermions on spontaneously generated spherical extra dimensions

Harold Steinacker·George Zoupanos
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Abstract

We include fermions to the model proposed in hep-th/0606021, and obtain a renormalizable 4-dimensional SU(N) gauge theory which spontaneously generates fuzzy extra dimensions and behaves like Yang-Mills theory on M^4 \times S^2. We find a truncated tower of fermionic Kaluza-Klein states transforming under the low-energy gauge group, which is found to be either SU(n), or SU(n_1) x SU(n_2) x U(1). The latter case implies a nontrivial U(1) flux on S^2, leading to would-be zero modes for the bifundamental fermions. In the non-chiral case they may pair up to acquire a mass, and the emerging picture is that of mirror fermions. We discuss the possible implementation of a chirality constraint in 6 dimensions, which is nontrivial at the quantum level due to the fuzzy nature of the extra dimensions.

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Harold Steinacker, George Zoupanos. 2007-08-23. Fermions on spontaneously generated spherical extra dimensions. https://doi.org/10.1088/1126-6708%2F2007%2F09%2F017

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