  The cosmological constant problem is a fundamental issue that has puzzled
researchers in the fields of theoretical physics and cosmology for a long time.
It arises from the discrepancy between the observed value of the cosmological
constant and the value predicted by quantum field theory. A new spacetime model
based on nonassociative geometry and statistical physics of complex networks
offers a fresh perspective on the problem. Our research indicates that
spacetime topology plays a crucial role in solving the cosmological constant
problem and addressing the dark energy issue. We discovered that spacetime foam
significantly impacts the effective cosmological constant, which is determined
by the density of topological geons. Furthermore, we demonstrate that the
source of dark energy is topological geons
