M. N. Tentyukov

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A C-program DIANA (DIagram ANAlyser) for the automatic Feynman diagram evaluation is presented. It consists of two parts: the analyzer of diagrams and the interpreter of a special text manipulating language. This language is used to create a source code for analytical or numerical evaluations and to keep the control of the process in general.
A method to calculate two-loop self-energy diagrams of the Standard Model is demonstrated. A direct physical application is the calculation of the two-loop electroweak contribution to the anomalous magnetic moment of the muon 1 2 (g − 2) μ . Presently, we confine ourselves to a “toy” model with only μ, γ and a heavy neutral scalar particle (Higgs). The(More)
A method to calculate two-loop self-energy diagrams of the Standard Model is demonstrated. A direct physical application is the calculation of the two-loop electroweak contribution to the anomalous magnetic moment of the muon 1 2 (g − 2) μ . Presently we confine ourselves to a “toy” model with only μ, γ and a scalar particle (Higgs). The algorithm is(More)
The project called DIANA (DIagram ANAlyzer)[1] for the evaluation of Feynman diagrams was started by our group some time ago. It was already used to calculate several processes [2]. The recent development of this project is documented in this contribution. The pictorial representation of diagrams described in [3] includes three different kinds of postscript(More)
DIANA uses QGRAF [3] as diagram generator. By now there exist several QGRAF versions which, however, have incompatible syntax of their input files. In most cases the user does not need or does not want to know which version of QGRAF is in use. DIANA takes care of this. It automatically investigates which version of QGRAF is implemented. Starting from(More)
The application of N = 2 supersymmetric Quantum Mechanics for the quantization of homogeneous systems coupled with gravity is discussed. Starting with the superfield formulation of N = 2 SUSY sigma-model, Hermitean self-adjoint expressions for quantum Hamiltonians and Lagrangians for any signature of a sigma-model metric are obtained. This approach is then(More)