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Whether string theory has a calculable solution of this kind that lives long enough is disputed.","posed_since":"2003","precise":"Determine whether there exist solutions of string theory, with $\\alpha'$ and $g_s$ corrections under control, whose 4D effective potential has a local minimum with $V > 0$ and lifetime longer than the Hubble time, such as KKLT or Large Volume Scenario constructions in type IIB orientifolds with anti-D3-brane uplift.","problem_ref":"c54e2c464a3c3926029d0e81cc6b59c76ad178bcc1537aa9af0f2a2bdc560180","references":"","settled_by":"An explicit compactification with all corrections shown to be parametrically small, or a no-go theorem covering the controlled regimes.","status_note":"McAllister, Moritz, Nally and Schachner (2024) constructed explicit candidate KKLT de Sitter vacua at leading order in $\\alpha'$ and $g_s$; control of higher corrections is disputed.","title":"Does string theory have controlled metastable de Sitter 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