Bill Sutherland Professor B.A., 1963, Washington University; M.A., 1965, Ph.D., 1968, State University of New York at Stony Brook

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RESEARCH INTERESTS Bill Sutherland is a theoretical physicist interested in all aspects of the cooperative behavior of systems with many degrees of freedom. In particular, he has investigated phenomena where the interaction between the many degrees of freedom is intrinsically strong, such as phase transitions and the critical point, quantum fluids, soliton modes and chaotic behavior. In order to understand these strongly interacting systems, he often exploits integrable systems which are exactly soluble, yet non-trivial. In addition, he has studied the consequences of quasiperiodicity - a borderline situation between the strict periodicity of the crystal and the random arrangement of a fluid - for the physics of a material. He emphasizes physical understanding over application, and has a long-standing interest in, and affection for, mathematical physics. Selected Publications "Twisted Boundary Conditions and Effective Mass in Heisenberg-Ising and Hubbard Rings" (with B.S. Shastry), Phys. Rev. Lett. 65, 243 (1990). "Adiabatic Transport Properties of an Exactly Soluble One-Dimensional Quantum Many-Body Problem" (with B.S. Shastry), Phys. Rev. Lett. 65, 1833 (1990). "Super Lax Pairs and Infinite Symmetries in the 1/r2 System" (with B.S. Shastry), Phys. Rev. Lett. 70, 4029 (1993). "Solution of Some Integrable One-Dimensional Quantum Systems" (with B.S. Shastry), Phys. Rev. Lett. 71, 5 (1993). "Exciton, Spinon and Spin Wave Modes in an Exactly Soluble One-Dimensional Quantum Many-Body System" (with R. R`mer), Phys. Rev. Lett. 71, 2789 (1993). "Localization of Light Waves in Fibonacci Dielectric Multilayers" (with W. Gellermann, M. Kohmoto and P.C. Taylor), Phys. Rev. Lett. 72, 633 (1994). "Exact Solution of a One-Dimensional Multi-Component Lattice Gas with Hyperbolic Interactions" (with R. Romer and S. Shastry), Phys. Rev. Lett. 73, 2154 (1994). "The Heisenberg-Ising Model Revisited" in Chen Ning Yang, a Great Physicist of the Twentieth Century, ed. C.S. Liu and S.T. Yau (International, Boston, 1995). "Low-Lying Eigenstates of the One-Dimensional Heisenberg Ferromagnet for any Magnetization and Momentum" Phys. Rev. Lett. 74, 816 (1995). "Confirmation of the Asymptotic Bethe Ansatz" Phys. Rev. Lett. 74, 1248 (1995). "Exact Solution for the Ground State of a One-Dimensional Quantum Lattice Gas with Coulomb-like Interaction," Phys. Rev. Lett. 80, 2445 (1998). "Exact Coherent States of a One-Dimensional Quantum Fluid in a Time-Dependent Trapping Potential," Phys. Rev. Lett. 80, 3678 (1998). "Exact Solution for the Ground State of a One-Dimensional Quantum Lattice Gas with Coulomb-like Interaction," in Calogero-Moser-Sutherland Models, ed. J.F. van Diejen and L. Vinet (Springer, New York, 2000). "Interacting Particles as Neither Bosons nor Fermions: A Microscopic Origin for Fractional Exclusion Statistics" (with K. Iguchi), Phys. Rev. Lett. 85, 2781 (2000)