Theoretical Condensed Matter Physics

Part of Condensed matter/AMO physics

Three of our theory colleagues, Coalson, Goldschmidt, and Jasnow, are working in the field of statistical physics. Boyanovsky’s earlier work also belongs in this category. Coalson’s work is centered on single-molecular transport through ion channels and structure/dynamics of charged colloidal suspension. In the latter work, he collaborated with Duncan, a high-energy theorist in our department. Goldschmidt has a strong background and interest in disordered systems. His early investigations focused on finding solutions to random-field and spin-glass models. Currently his work focuses on two topics: (a) structure and dynamics of linear polymers in the presence of quenched disorders, and (b) melting transitions of flux lines in high-temperature superconductors. Jasnow has been working on various problems related to phase transitions, pattern formation, and interfacial phenomena for a number of years. Recently he teamed up with A. Balazs of the Chemical Engineering Department to solve emerging problems in polymer physics and nano-structures of phase-separating fluids with various inclusions.

Theoretical research in quantum information is carried out by Gerjuoy, Levy, and Tabakin. Gerjuoy works on issues related to entanglement between two-level and d-level quantum systems, and has also written a definitive review of Shor’s algorithm. Tabakin has developed a comprehensive software package that allows researchers to simulate quantum algorithms within the density operator formalism. Levy has worked on methods for encoding quantum information in spin systems. Liu is interested in quantum phase transitions in cold atomic gases and in condensed matter systems.

Liu is working in the frontier of cold-atom physics. More specifically, he will work on Fermionic superfluidity in ultracold atoms. There has been a flurry of activities in this emerging field and the expectation has been high because new physics is likely to be discovered when matters are pushed to such an extreme limit.

Pratt is heavily engaged in the calculations of different scattering events (cross-sections) involving photons and electrons or photons with excited states of atoms and ions. The research is of fundamental significance for understanding various radiation processes in high-temperature and/or high-density plasmas often encountered in astrophysical objects and fusion reactors.