image superparticle model Original Research Article

We consider the formulation and quantization of the image superparticle model, both with and without central charge. Without the central charge the action possesses image invariance and therefore is naturally quantized in the image harmonic superspace. The quantization reproduces the image supergauge strength multiplets, described by analytic image superfields and a gravitino multiplet as a constrained image chiral superfield. When the central charge is present, it breaks the image R-symmetry of image superalgebra down to image, and the corresponding superparticle model is formulated in the image harmonic superspace extended by a pair of extra Grassmann variables. The quantization of such a model leads to the massive BPS image vector multiplet. It is shown that upon additional superfield constraints such multiplet reduces to the massive image vector multiplet.