Abstract (eng)
Based on the work of my advisor Gandalf Lechner we extend the algebraic construction and classification of Quatum Field Theories on 1+1 dimensional Minkowski space, applying principles of inverse scattering theory with factorizing S-matrices to models with several particle species. We construct a Borchers triple, and show that the local net, obtained from a von Neumann algebra constructed from two different wedge-local fields, is a covariant standard right wedge algebra. Moreover, we show that its generators are polarization-free and temperate. We work out the underlying scattering theory and solve the inverse scattering problem on the two-particle level. This results in the matrix-valued scattering function, initially defining the symmetry of the model, to be the 2 -> 2 S-matrix. A proof of asymptotic completeness of the space of 2 -> 2 scattering states is given. Stating the general solution to the inverse scattering problem in form of a total expression is not contained in this work, because a complete set of solutions to the Yang-Baxter equation has not been found so far. This complication is due to the matrix character of the scattering matrix, in contrast to the scalar setting where a solution can be given. Therefore some examples e.g. Sigma models are discussed.