This article discusses the intimate relationship between quantum mechanics, information
theory, and relativity theory. Taken together these are the foundations of present-day …

In the book of Haag [Local Quantum Physics (Springer Verlag, Berlin, 1992)] about local
quantum field theory the main results are obtained by the older methods of C*-and W …

The theory of superselection sectors is generalized to situations in which normal statistics
has to be replaced by braid group statistics. The essential role of the positive Markov trace of …

We identify the statistical dimension of a superselection sector in a local quantum field
theory with the square root of the index of a localized endomorphism of the quasi-local C …

Given the local observables in the vacuum sector fulfilling a few basic principles of local
quantum theory, we show that the superselection structure, intrinsically determined a priori …

This book explains the subtleties of quantum statistical mechanics in lower dimensions and
their possible ramifications in quantum theory. The discussion is at a pedagogical level and …

Algebraic quantum field theory provides a general, mathematically precise description of the
structure of quantum field theories, and then draws out consequences of this structure by …

Most modern physicists and philosophers would agree that a decent interpretation of
quantum mechanics should fullfil at least two criteria. Firstly, it has to elucidate the physical …

Quantum Field Theory (QFT) has proved to be the most useful strategy for the description of
elementary particle interactions and as such is regarded as a fundamental part of modern …

Construction of one-particle states as unitary representations of the Poincaré algebra in 2+ 1
dimensions shows that an anyon has one polarization state. However, for nonzero spin …