1996/05/31 by J.A. Casas, J. A. Casas · 13 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Nuclear physics research studies #Quantum Chromodynamics and Particle Interactions #hep-ph #hep-th
paper · pdf · doi:10.1016/0370-2693(96)00821-0
published as Phys.Lett. B384 (1996) 103-110 · 10 pages, plain LaTeX. Some references added and eq.(35) simplified
arxiv created 1996/06/05 · openalex publication_date 1996/09/01 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We show that the usual dilaton dominance scenario, derived from the tree level Kähler potential, can never correspond to a global minimum of the potential at V=0. Similarly, it cannot correspond to a local minimum either, unless a really big conspiracy of different contributions to the superpotential W(S) takes place. These results, plus the fact that the Kähler potential is likely to receive sizeable string non-perturbative contributions, strongly suggest to consider a more general scenario, leaving the Kähler potential arbitrary. In this way we obtain generalized expressions for the soft breaking terms but a predictive scenario still arises. Finally, we explore the phenomenological capability of some theoretically motivated forms for non-perturbative Kähler potentials, showing that it is easy to stabilize the dilaton at the realistic value S∼ 2 with just one condensate and no fine-tuning.