20 citations · 26 across the 3 of their papers we have counts for
5 papers · 1 filter
Perturbative and nonperturbative correspondences between compact and non-compact sigma-models
Max Niedermaier, Erhard Seiler, Peter Weisz
Compact (ferro- and antiferromagnetic) sigma-models and noncompact (hyperbolic) sigma-models are compared in a lattice formulation in dimensions . While the ferro- and an…
Non-amenability and spontaneous symmetry breaking -- The hyperbolic spin-chain
Max Niedermaier, Erhard Seiler
The hyperbolic spin chain is used to elucidate the notion of spontaneous symmetry breaking for a non-amenable internal symmetry group, here SO(1,2). The noncompact symmetry is show…
A fixed point for truncated quantum Einstein gravity
P. Forgacs, M. Niedermaier
A perturbative quantum theory of the two Killing vector reduction of Einstein gravity is constructed. Although the reduced theory inherits from the full one the lack of standard pe…
Parametric holomorphy? Triviality versus Duality in Sinh-Gordon
M. Niedermaier
Suppose a regularised functional integral depends holomorphically on a parameter that receives only a finite renormalization. Can one expect the correlation functions to retain the…
On the Free Field Realization of Form Factors
M. R. Niedermaier
A method to construct free field realizations for the form factors of diagonal factorized scattering theories is described. Form factors are constructed from linear functionals ove…