P-term, D-term and F-term inflation

Details P-term, D-term and F-term inflation P-term, D-term and F-term inflation

2003-06-09

arxiv.org/abs/hep-th/0306058v3

JCAP 0310:008,2003

Physics

High Energy Physics

High Energy Physics - Theory

18 pages, a footnote is added

Scientific paper

10.1088/1475-7516/2003/10/008

P-term inflation is a version of hybrid inflation which naturally appears in some brane inflation models. It was introduced in the framework of N=2 supersymmetric gauge theory where superconformal SU(2,2|2) symmetry is broken down to N=2 supersymmetry by the vev of the auxiliary triplet field P. Depending on the direction of this vev, one can get either D-term inflation or F-term inflation with a particular relation between Yukawa and gauge coupling, or a mix of these models. We show that F and D models, before coupling to gravity is included, are related by a change of variables. Coupling of this model to N=1 supergravity breaks this symmetry and introduces a class of P-term models interpolating between D-term and F-term inflation. The difference between these models is determined by the direction of the vector P, which depends on the fluxes in the underlying D3/D7 model of brane inflation. We discuss cosmological consequences of various versions of P-term inflation.

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