String Phenomenology and the Cosmological Constant
arXiv:hep-th/0607148 · doi:10.1016/j.physletb.2007.01.049
Abstract
It is argued that classical string solutions should not be fine tuned to have a positive cosmological constant (CC) at the observed size, since even the quantum corrections from standard model effects will completely negate any classical string theory solution with such a CC. In fact it is even possible that there is no need at all for any ad hoc uplifting term in the potential since these quantum effects may well take care of this. Correspondingly any calculation of the parameters of the MSSM has to be rethought to take into account the evolution of the CC. This considerably complicates the issue since the initial conditions for RG evolution of these parameters are determined by the final condition on the CC! The Anthropic Principle is of no help in addressing these issues.
Added equation (20) clarifying usual assumption behind calculations of soft terms. Version published in PLB
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Cited by in corpus (9)
- SUSY Breaking in Local String/F-Theory Models
- De Sitter String Vacua from Dilaton-dependent Non-perturbative Effects
- Life at the Interface of Particle Physics and String Theory
- TeV Scale Mirage Mediation and Natural Little SUSY Hierarchy
- On Gauge Mediated SUSY Breaking and Moduli Stabilization
- Constraints on LVS Compactifications of IIB String Theory
- Electronic structure and exotic exchange splitting in spin-density-wave states of BaFeAs
- Mediation of Supersymmetry Breaking in a Class of String Theory Models
- Supersymmetry breaking in ISS coupled to gravity