log(M_Pl/m_3/2)

Details log(M_Pl/m_3/2) log(M_Pl/m_3/2)

2005-09-20

arxiv.org/abs/hep-th/0509158v1

Physics

High Energy Physics

High Energy Physics - Theory

Based on talks given at PLANCK05, Trieste, Italy and PASCOS05, Gyeongju, Korea

Scientific paper

10.1063/1.2149698

Flux compactifications of string theory seem to require the presence of a fine-tuned constant in the superpotential. We discuss a scheme where this constant is replaced by a dynamical quantity which we argue to be a `continuous Chern--Simons term'. In such a scheme, the gaugino condensate generates the hierarchically small scale of supersymmetry breakdown rather than adjusting its size to a constant. A crucial ingredient is the appearance of the hierarchically small quantity exp(-) which corresponds to the scale of gaugino condensation. Under rather general circumstances, this leads to a scenario of moduli stabilization, which is endowed with a hierarchy between the mass of the lightest modulus, the gravitino mass and the scale of the soft terms, m_modulus ~ m_3/2 ~ ^2 m_soft. The `little hierarchy' is given by the logarithm of the ratio of the Planck scale and the gravitino mass, ~ log(M_Pl/m_3/2) ~ 4pi^2. This exhibits a new mediation scheme of supersymmetry breakdown, called mirage mediation. We highlight the special properties of the scheme, and their consequences for phenomenology and cosmology.

Affiliated with

Also associated with

No associations

Rating

log(M_Pl/m_3/2) 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 log(M_Pl/m_3/2), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and log(M_Pl/m_3/2) will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-486337