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Interaction picture in QFT and Haag’s theorem

Room: 204
Speaker: Marco Bilardello
We will discuss on interaction picture in quantum field theory and how Haag’s theorem proves that this approach cannot be used to describe interacting fields. To do so, a brief introduction on algebraic quantum field theory is necessary. More or less, the main topics we will see are: C*-algebra, GNS theorem, Fock and Non-Fock representation, locality, Weyl representation, Haag’s theorem
References: – “Symmetry Breaking”, F. Strocchi; – “Operator Algebras and Quantum Statistical Mechanics”, vol.1, O. Bratteli, D.W. Robinson; -“Algebraic Methods in Statistical Mechanics and Quantum Fields Theory”, G.G. Emch.

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University of Trieste
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