a Recent paper establishes under solid grounds anisotropy in the expansion acceleration rate in the universe. My question is very simple:
can this anomaly be explained entirely in terms of a cosmological constant?
I suspect that by adjusting the $\alpha$ scale factor to depend not only on time but also on a unit direction it seems that one could explain the above anisotropy without appealing to any exotic field (other than a cosmological constant) but then you only do not know why the asymmetry in the boundary condition (early universe) exists in the first place