2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52581In this talk we provide arguments on possible relation between the cosmological constant in our space and the non-commutativity parameter of the internal space of compactified string theory. The arguments are valid in the context of D3/D7 brane cosmological model of inflation/acceleration.A talk at the conference in honor of Albert Schwarz. 5 pages, 7 figuresHigh Energy Physics - TheoryAstrophysicsGeneral Relativity and Quantum CosmologyHigh Energy Physics - Phenomenologytext