Universität Augsburg

Herr Max Lewandowski
Universität Potsdam
spricht am
Montag, 29. Januar 2018
um
16:00 Uhr
im
Raum 2004 (L1)
über das Thema:
Abstract: 
In the algebraic approach to Quantum Field Theory on flat spacetimes, that is Minkowski space, spacetime regions are associated with certain topological algebras of observables, s.t. a bunch of physically motivated axioms (locality, Lorentz covariance) are respected. With the exception of covariance this more or less directly generalizes to curved spacetimes, which are well modelled by globally hyperbolic Lorentzian manifolds, since e.g. certain causality conditions are satisfied and we have a wellposed Cauchy problem. However the principle of Lorentz covariance has to be adapted to such spacetimes with in general trivial isometry group. This is achieved by considering a full class of „compatible“ spacetimes as objects of a certain category and building the Quantum Field Theory as a covariant functor into a suitable category of operator algebras. Then the corresponding states are defined as functionals on the algebra of observables satisfying certain physical properties. In the talk those properties as well as a possible construction of such states for a large class of spacetimes and Quantum Fields will be presented. 
Hierzu ergeht herzliche Einladung. 
Prof. Dr. Bernhard Hanke 
Kaffee, Tee und Gebäck eine halbe Stunde vor Vortragsbeginn im Raum 2006 (L1).