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4 papers · 2 filters
The chiral WZNW phase space as a quasi-Poisson space
J. Balog, L. Feher, L. Palla
It is explained that the chiral WZNW phase space is a quasi-Poisson space with respect to the `canonical' Lie quasi-bialgebra which is the classical limit of Drinfeld's quasi-Hopf…
Two-loop beta functions of the Sine-Gordon model
Janos Balog, Arpad Hegedus
We recalculate the two-loop beta functions in the two-dimensional Sine-Gordon model in a two-parameter expansion around the asymptotically free point. Our results agree with those…
A two-dimensional integrable axionic sigma-model and T-duality
J. Balog, P. Forgacs, L. Palla
An -matrix is proposed for the two dimensional O(3) -model with a dynamical -term (axion model). Exploiting an Abelian T-duality transformation connecting the axion model…
The Intrinsic Coupling in Integrable Quantum Field Theories
J. Balog, M. Niedermaier, F. Niedermayer +3
The intrinsic 4-point coupling, defined in terms of a truncated 4-point function at zero momentum, provides a well-established measure for the interaction strength of a QFT. We sho…