Fermions on spontaneously generated spherical extra dimensions

Steinacker, H; Zoupanos, G

dc.contributor.author	Steinacker, H	en
dc.contributor.author	Zoupanos, G	en
dc.date.accessioned	2014-03-01T01:56:18Z
dc.date.available	2014-03-01T01:56:18Z
dc.date.issued	2007	en
dc.identifier.issn	11266708	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/28050
dc.subject	BRST symmetry	en
dc.subject	Superstrings and heterotic strings	en
dc.title	Fermions on spontaneously generated spherical extra dimensions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1088/1126-6708/2007/09/017	en
heal.identifier.secondary	http://dx.doi.org/10.1088/1126-6708/2007/09/017	en
heal.identifier.secondary	017	en
heal.publicationDate	2007	en
heal.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 M4 × S2. 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(n1) × SU(n2) × U(1). The latter case implies a nontrivial U(1) flux on S2, 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. © SISSA 2007.	en
heal.journalName	Journal of High Energy Physics	en
dc.identifier.doi	10.1088/1126-6708/2007/09/017	en
dc.identifier.volume	2007	en
dc.identifier.issue	9	en