Browsing Naturwissenschaften, Mathematik und Informatik by Referee "Buchholz, Detlev Prof. Dr."
Now showing items 1-6 of 6
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Local Equilibrium States in Quantum Field Theory in Curved Spacetime
(2012-04-26)The present work concerns itself with the conceptual problem of assigning thermal parameters to states in quantum field theory in curved spacetime, and is based on the concept of local thermal equilibrium in the sense of ... -
Spectral theory of automorphism groups and particle structures in quantum field theory
(2009-03-06)This Thesis presents some physically motivated criteria for the existence of particles and infra-particles in a given quantum field theory, and verifies them in models. The analysis is based ... -
On the Construction of Quantum Field Theories with Factorizing S-Matrices
(2006-10-25)The subject of this thesis is a novel construction method for interacting relativistic quantum field theories on two-dimensional Minkowski space. Employing the algebraic framework of quantum ... -
Structure of Coset models
(2003-07-15)We study inclusions of local, chiral, conformal quantum theories C which are contained in an ambient theory B and commute with another given subtheory A. These subtheories C are ... -
On Infravacua and the Superselection Structure of Theories with Massless Particles
(2001-08-07)In quantum field theories with massless particles, states carrying a nontrivial superselection charge may have very poor localisation properties when compared to the vacuum. In this case, ... -
Lokale Algebren und Operatorprodukte am Punkt
(2000-12-19)Quantum fields are known to be singular objects; in particular, their products at coinciding space-time points are ill-defined and lead to divergences. We present a model-independent and mathematically consistent method ...