Pairs in the Light-front and Covariance * Typeset Using Revt E X
نویسنده
چکیده
The electromagnetic current of bound systems in the light-front is constructed in the Breit-Frame, in the limit of momentum transfer q + = (q 0 + q 3) vanishing. In this limit, the pair creation term survives and it is responsible for the covariance of the current. The pair creation term is computed for the j + current of a spin one composite particle in the Breit-frame. The rotational symmetry of j + is violated if the pair term is not considered.
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