Strongly Interacting Systems: Past, Present and Future

A symposium in memory of Richard A. Ferrell – November 16 - 17, 2007

Scientific Coordinators: P. Fulde, P. Hohenberg, R.E. Prange

Professor Ferrell, during his lifetime, initiated and advanced a number of important subfields of condensed matter and statistical physics. Recent advances in two such subjects were particularly prominent at the meeting. In the first, dynamical scaling, several recent advances were reported. Ferrell introduced this subject in 1965 with colleagues, several of whom were able to attend the meeting.

One of the first proposals for unconventional superconductivity, which he and Fulde, (and independently, Larkin and Ovchinnikov) suggested even earlier, 1962, is a truly remarkable story. For about 35 years, the proposal for this `FFLO' state, as it is known, lay dormant. In the last five or ten years, the field has sprung to life, with a number of quite different systems, from certain crystals, to `cold atoms', to neutron stars, giving results suggesting something like an FFLO state. In very recent work presented by Scalapino, it appears possible that well known high-T$_{c}$ d-wave superconductors may be likened to a simple mathematical transformation of the FFLO state.

In addition to Douglas Scalapino, there were a number of other distinguished colleagues who were able to participate. To keep the list short, we mention only Michael Fisher, Jan and Anneke Sengers, and of course, Ferrell's four most successful students, John Quinn, Peter Fulde, Alan Luther and Jayantha Bhattacharjee. There were several younger physicists who were called upon to give talks, which were well received.

The meeting overall was a considerable success. It brought together over 40 physicists with a common regard for Richard Ferrell, who reminisced about their friendship with Richard and told of his considerable impact on their lives and careers. In addition to the cross fertilisation afforded by hearing about recent research on related topics, we hope that the meeting will be fruitful in the longer run as a source for historians of physics. Fortunately, Ferrell's wife Miriam, and son Robert, also a physicist, were able to attend.