A cartoon of the Effective Field Theory of many nucleon systems is drawn, concentrating on Compton scattering in the two nucleon system, and on nd scattering in the three body system. The purpose of this presentation is to give a concise introduction into the Effective Field Theory (EFT, for a review see e.g. [1]) of two and three nucleon systems as it emerged in the last three years. However, ...

A simple formula for the ratio of the number of oddand even-parity states as a function of temperature is derived. This formula is used to calculate the ratio of level densities of opposite parities as a function of excitation energy. We test the formula with quantum Monte Carlo shell model calculations in the (pf+g9/2)-shell. The formula describes well the transition from low excitation energi...