Preserving Flat Directions During Inflation

Details Preserving Flat Directions During Inflation Preserving Flat Directions During Inflation

1995-04-15

arxiv.org/abs/hep-ph/9504307v1

Phys.Lett.B355:71-77,1995

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, no figures

Scientific paper

10.1016/0370-2693(95)00773-E

Supersymmetry is generally broken by the non-vanishing vacuum energy density present during inflation. In supergravity models, such a source of supersymmetry breaking typically makes a contribution to scalar masses of order ${\tilde m}^2 \sim H^2$, where $H^2 \sim V/M_P^2$ is the Hubble parameter during inflation. We show that in supergravity models which possess a Heisenberg symmetry, supersymmetry breaking makes no contribution to scalar masses, leaving supersymmetric flat directions flat at tree-level. One-loop corrections in general lift the flat directions, but naturally give small negative squared masses $\sim - g^2 H^2/(4\pi)^2$ for all flat directions that do not involve the stop. No-scale supergravity of the SU(N,1) type and the untwisted sectors from orbifold compactifications are special cases of this general set of models. We point out the importance of the preservation of flat directions for baryogenesis.

Affiliated with

Also associated with

No associations

Rating

Preserving Flat Directions During Inflation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Preserving Flat Directions During Inflation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preserving Flat Directions During Inflation will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-254156