Renormalizable extra-dimensional models
Renormalizable extra-dimensional models
Non-Abelian gauge theories may have continuum limits in more than four dimensions, supported by non-trivial ultra-violet fixed points. Moreover, such theories can be expected to be accessible to Wilson's epsilon expansion. We investigate this series for SU(N) Yang-Mills, in particular for the fixed point coupling and critical exponent nu, up to four loops. From the model-building point of view, such theories would be effectively perturbatively renormalizable in the normal way. A particularly attractive possibility is the construction of renormalizable extra-dimensional models of the weak interactions, which have the potential to address the full hierarchy problem. The simplest such gauge-Higgs unification model is however ruled out by a combination of theoretical and phenomenological constraints.
field theories in higher dimensions, nonperturbative effects, beyond standard model, compactification and string models
1-31
Morris, Tim R.
a9927d31-7a12-4188-bc35-1c9d3a03a6a6
24 January 2005
Morris, Tim R.
a9927d31-7a12-4188-bc35-1c9d3a03a6a6
Abstract
Non-Abelian gauge theories may have continuum limits in more than four dimensions, supported by non-trivial ultra-violet fixed points. Moreover, such theories can be expected to be accessible to Wilson's epsilon expansion. We investigate this series for SU(N) Yang-Mills, in particular for the fixed point coupling and critical exponent nu, up to four loops. From the model-building point of view, such theories would be effectively perturbatively renormalizable in the normal way. A particularly attractive possibility is the construction of renormalizable extra-dimensional models of the weak interactions, which have the potential to address the full hierarchy problem. The simplest such gauge-Higgs unification model is however ruled out by a combination of theoretical and phenomenological constraints.
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Published date: 24 January 2005
Keywords:
field theories in higher dimensions, nonperturbative effects, beyond standard model, compactification and string models
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Local EPrints ID: 28834
URI: http://eprints.soton.ac.uk/id/eprint/28834
PURE UUID: eac929dc-d988-49a3-b329-de3739122b8e
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Date deposited: 08 May 2006
Last modified: 16 Mar 2024 02:36
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