de Sitter string vacua from dilaton-dependent non-perturbative effects

We consider a novel scenario for modulus stabilisation in IIB string compactifications in which the Kähler moduli are stabilised by a general set-up with two kinds of non-perturbative effects: (i) standard Kähler moduli-dependent non-perturbative ef fects from gaugino condensation on D7-branes or E3-instantons wrapping four-cycles in the geometric regime; (ii) dilaton-dependent non-perturbative effects from gaugino condensation on space-time …