The proceedings of the 14th International Workshop on Condensed Matter Theories, held June 1990, on the Island of Elba, Italy, which brought together scientists from different areas of condensed matter, such as quantum fluids, atoms and molecules, high-Tc superconductivity, and nuclear physics. The

The XIV International Workshop on Condensed Matter Theories has been held at the Elba International Physics Center (EIPC), Marciana Marina, Isola d'Elba, Italy, from 18-23 June, 1990. The Workshop started in 1977 in Sao Paolo, Brazil, as the 1st Pan American Workshop on Condensed Matter Theories, with the purpose of bringing together scientists from the Western countries, working in many different topics of Condensed Matter Theories, to facilitate exchanges of ideas and technologies from different areas as well as collaborations among the scientists. The next five Workshops were held at...