We have taken no time to explain in this exposition so
far. It is the case that the
dependence on the excluded volume
term is probably a little reduced from this according to theoretical
estimates. The corrections are small, and currently, I do not actually
permit this to be used to adjust the
term, but in the near
future I will. At any rate, even if you desire to use it, you should
assume that a good value is close to zero and should be greater than
zero. I have left it open to chose otherwise. The range that seems
permissible is
.