4,684 research outputs found
Braided Structure in 4-dimensional conformal Quantum Field Theory
Higher dimensional conformal QFT possesses an interesting braided structure
which, different from the d=1+1 models, is restricted to the timelike region
and therefore easily escapes euclidean action methods. It lies behind the
spectrum of anomalous dimensions which may be viewed as a kind of substitute
for a missing particle interpretation in the presence of interactions.Comment: Dedicated to Gerhard Mack and Robert Schrader on the occasion of
their 60th birthday, submitted to Phys. Lett. B, 10 pages, improvements of
the formulation, shortening of the text, addition of a formula, removal of
typo
Modular Localization and the Bootstrap-Formfactor Program
We extend the ''modular localization'' principle from free to interacting
theories and test its power for the special class of d=1+1 factorizing models.Comment: 27 pages of Late
Wigner Representation Theory of the Poincare Group, Localization, Statistics and the S-Matrix
It has been known that the Wigner representation theory for positive energy
orbits permits a useful localization concept in terms of certain lattices of
real subspaces of the complex Hilbert -space. This ''modular localization'' is
not only useful in order to construct interaction-free nets of local algebras
without using non-unique ''free field coordinates'', but also permits the study
of properties of localization and braid-group statistics in low-dimensional
QFT. It also sheds some light on the string-like localization properties of the
1939 Wigner's ''continuous spin'' representations.We formulate a constructive
nonperturbative program to introduce interactions into such an approach based
on the Tomita-Takesaki modular theory. The new aspect is the deep relation of
the latter with the scattering operator.Comment: 28 pages of LateX, removal of misprints and extension of the last
section. more misprints correcte
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