Contraction and decomposition matrices for vacuum diagrams
classification
✦ hep-th
keywords
decompositionmatricescontractiondiagramsvacuumcalculationdeterminantexplicit
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Tensor reduction of vacuum diagrams uses contraction and decomposition matrices. We present general recurrence relations for the calculation of those matrices and an explicit formula for the 3-loop decomposition matrix and its determinant.
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