Freiburg 2008 – scientific programme

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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.