Raising anti–de Sitter vacua to de Sitter vacua in heterotic M theory
Raising anti–de Sitter vacua to de Sitter vacua in heterotic M theory
We explore the possibility of obtaining de Sitter vacua in strongly coupled heterotic models by adding various corrections to the supergravity potential energy. We show that, in a generic compactification scenario, Fayet-Iliopoulos terms can generate a de Sitter vacuum. The cosmological constant in this vacuum can be fine tuned to …