Baker–Campbell–Hausdorff relations for supergroups

Abstract
One-parameter subgroups, the exponential mapping, and canonical coordinates have previously been defined for connected supergroups. In this paper, a technique for obtaining analytical expressions linking different coordinate schemes for supergroups is presented. These are the Baker–Campbell–Hausdorff relations. The method is illustrated in detail with the examples of supergroups based on the supersymmetric quantum-mechanical superalgebra sqm (2) and on the Inönü–Wigner contraction isop(1/2) of the simple superalgebra osp(1/2).

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