According to the KKLT scenario, metastable dS vacua are formed as a result of uplifting of supersymmetric AdS vacua by $\overline { D3}$ branes. I describe an extended version of this scenario where metastable dS vacua appear after an uplift from a state where the potential of the volume modulus in the absence of $\overline { D3}$ branes would be unbounded below. This mechanism may considerably strengthen vacuum stabilization in the early universe.
Categories: hep-th astro-ph.CO gr-qc hep-ph