RECOLLECTIONS ON DIMENSIONAL REGULARIZATION AND RELATED TOPICS

Professor Juan José Giambiagi and I started working on divergent diagrams in different number of dimensions in 1970. We had a certain idea about the behavior in odd or even number of dimensions, but the most important factor in our work, I think, was the previous experience with an analytical regularization method. We had developed it a few years before. Within this method the amplitudes turned out to be analytic functions of the regularizing parameter, with poles at the physical value of that parameter…