How tight are experimental and astrophysical tests on whether Cluster Decomposition is satisfied at various space-like separations?
Is there a review paper or a standard reference on the question?
I note that Cluster Decomposition may be related to the existence of a unique vacuum state and to spontaneous symmetry breaking.
This post imported from StackExchange Physics at 2014-08-11 14:52 (UCT), posted by SE-user Peter Morgan