Siegel der Universität Augsburg

Universität Augsburg
Institut für Mathematik

Siegel der Universität Augsburg

 

Oberseminar Differentialgeometrie

 

Herr Max Lewandowski
Universität Potsdam

 
spricht am
 
Montag, 29. Januar 2018
 
um
 
16:00 Uhr
 
im
 
Raum 2004 (L1)
 
über das Thema:
 

»Physical states for Quantum Field Theory on curved spacetimes«

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 well-posed 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).



wwwadm@Math.Uni-Augsburg.DE,    Di 16-Jan-2018 15:26:47 MEZ