Photodisintegration of a Bound State on the Torus
  In this article the cross-section for the photodisintegration of a bound state is expressed, order by order in the multipole expansion, in terms of matrix elements between states living on the three-dimensional torus. The motivation is to make the process amenable to Monte-Carlo simulations. The case of the deuteron is discussed. 
Harvey B. Meyer
hep-lat hep-th nucl-th