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MP: Fachverband Theoretische und Mathematische Grundlagen der Physik
MP 6: Quantenfeldtheorie
MP 6.2: Talk
Wednesday, March 5, 2008, 17:20–17:40, KGI-HS 1023
Phase space structure and the uniqueness of the vacuum in QFT — •Wojciech Dybalski — University of Göttingen, Germany
It is shown that only one vacuum state can be prepared with a finite amount of energy in any theory which satisfies a recently proposed phase space condition. This new criterion, which is verified in free field theory, restricts correlations between spatially separated regions. Conclusions about time-like asymptotic structure of physical states are derived.