2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52918We propose a new approach to understand hierarchy problem for cosmological constant in terms of considering noncommutative nature of space-time. We calculate that vacuum energy density of the noncommutative quantum field theories in nontrivial background, which admits a smaller cosmological constant by introducing an higher noncommutative scale $μ_{NC}\sim M_p$. The result $ρ_Λ\sim 10^{-6}Λ_{SUSY}^8M_p^4/μ_{NC}^8$ yields cosmological constant at the order of current observed value for supersymmetry breaking scale at 10TeV. It is the same as Banks' phenomenological formula for cosmological constant.7 pages, no figures, v4, references addedHigh Energy Physics - TheoryAstrophysicstext