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Paper IPM / P / 11776  


Abstract:  
Inflationary models are usually based on dynamics of one or more scalar fields coupled to gravity. In this work we present a new class of inflationary models, gaugeflation or nonAbelian gauge field inflation, where slowroll inflation is driven by a nonAbelian gauge field. This class of models are based on a gauge field theory with a generic nonAbelian gauge group minimally coupled to gravity. We then focus on a particular gaugeflation model by specifying the action for the gauge theory which allows for a successful slowroll inflation. This model has two parameters the value of which can be fixed using the CMB and other cosmological data. These values are within the natural range of parameters in generic grand unified theories of particle physics.
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