Steven R. White

Professor, Physics & Astronomy
School of Physical Sciences

PH.D., Cornell University, 1988

B.A.,, University of California, San Diego, 1982

Phone: (949) 824-2256
Fax: (949) 824-2174

University of California, Irvine
2172 Frederick Reines Hall
Mail Code: 4575
Irvine, CA 92697

Condensed matter theory with emphasis on numerical approaches for strongly correlated magnetic and superconducting systems
Professor White's research is concentrated on the study of strongly correlated electron systems, such as the Hubbard model, which is used to describe high-temperature superconductors. He specialty is numerical approaches for solving the quantum mechanics of strongly interacting many particle systems. The main numerical technique used by Professor White, the density matrix renormalization group (DMRG), was invented by White in 1992. This methods has been very successful and has now been adopted by dozens of groups worldwide, and was recently the subject of an international conference.

One of the most fascinating results of this works concerns the presence of stripes in high temperature superconductors. Recent experimental evidence has shown that the electrons in high temperature superconductors are segregated into stripe-like patterns. This has been a major puzzle and surprise for most theorists--it is very difficult to write down and then solve a model for these systems which gives stripes. Professor White's DMRG simulations show stripes in excellent agreement with experiments. The figure below (see website) shows results from one of these simulations.
Publications S.R. White, "Density Matrix Formulation for Quantum
Renormalization Groups," Phys. Rev. Lett. 69, 2863 (1992).
  N.E. Bickers, D.J. Scalapino, and S.R. White, "Conserving approximations for strongly correlated electron systems: Bethe-Salpeter equation and dynamics for the two dimensional Hubbard model," Phys. Rev. Lett. 62, 961 (1989).
  S.R. White, R.M. Noack, and D.J. Scalapino, "Resonating
Valence Bond Theory of Coupled Heisenberg Chains,"
Phys. Rev. Lett. 73, 886 (1994).
  Steven R. White and D.J. Scalapino, "DMRG Study of the
Striped Phase in the 2D t-J model,"
Phys. Rev. Lett. 80, 1272 (1998).
  Steven R. White, "How It All Began: A personal Account",
in Density-Matrix Renormalization: A New Numerical Method
in Physics, Eds. I. Peschel, X. Wang, M. Kaulke, and K. Hallberg,(Springer Verlag, Heidelberg, Berlin, 1999), p. IX-XVI.
Councillor, Division of Computational Physics, American Physical Society
Fellow, American Physical Society
Link to this profile
Last updated 04/01/2002