Causal independence and the energy-level density of states in local quantum field theory
- Cite this article as:
- Buchholz, D. & Wichmann, E.H. Commun.Math. Phys. (1986) 106: 321. doi:10.1007/BF01454978
Within the general framework of local quantum field theory a physically motivated condition on the energy-level density of well-localized states is proposed and discussed. It is shown that any model satisfying this condition obeys a strong form of the principle of causal (statistical) independence, which manifests itself in a specific algebraic structure of the local algebras (“split property”). It is also shown that the proposed condition holds in a free field theory.