%0 Journal Article
%T A Possible Answer for the Cosmological Constant Problem
%A Shi-Hao Chen
%J Frontiers of Astronomy, Astrophysics and Cosmology
%D 2019
%R 10.12691/faac-4-1-3
%X Based on a model of the universe without singularity, it is proven that the energy density of the vacuum state must be zero or a finite and small positive number. Consequently, the effective cosmological constant is easily determined according to the observations
%U http://www.sciepub.com/FAAC/abstract/9843