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8 papers · 2 filters
Identifying the Operator Content, the Homogeneous Sine-Gordon models
O. A. Castro-Alvaredo, A. Fring
We address the general question of how to reconstruct the field content of a quantum field theory from a given scattering theory in the context of the form factor program. For the…
Functional Differential Equations for the Free Energy and the Effective Energy in the Broken-Symmetry Phase of phi^4-Theory and Their Recursive Graphical Solution
A. Pelster, H. Kleinert
Extending recent work on QED and the symmetric phase of the euclidean multicomponent scalar ϕ^4-theory, we construct the vacuum diagrams of the free energy and the effective energy…
Particle versus Field Structure in Conformal Quantum Field Theories
Bert Schroer
I show that a particle structure in conformal field theory is incompatible with interactions. As a substitute one has particle-like exitations whose interpolating fields have in ad…
Anomalous Scale Dimensions from Timelike Braiding
Bert Schroer
Using the previously gained insight about the particle/field relation in conformal quantum field theories which required interactions to be related to the existence of particle-lik…
Polarization-Free Generators and the S-Matrix
Hans-Juergen Borchers, Detlev Buchholz, Bert Schroer
Polarization-free generators, i.e. ``interacting'' Heisenberg operators which are localized in wedge-shaped regions of Minkowski space and generate single particle states from the…
Form Factors of the Homogeneous Sine-Gordon models
O. A. Castro-Alvaredo, A. Fring, C. Korff
We provide general determinant formulae for all n-particle form factors related to the trace of the energy momentum tensor and the analogue of the order and disorder operator in th…