His interests also include computational algorithms designed for massively parallel platforms, MCSCF methods, Green's Function techniques based on MCSCF wavefunctions, DFT methods (including methods to further reduce scaling, for example multipole ideas), and novel DFT approaches for excited states.
He has recently co-authored a text "Quantum Mechanics in Chemistry" with Jack Simons, the Henry Erying Professor of Chemistry at the University of Utah.
Jeff is currently the Division Director of the Computer Science and Mathematics Division at the Oak Ridge National Laboratory (ORNL), where he has worked since 2002.
Prior to joining ORNL, Jeff was the Deputy Director of EMSL (Environmental Molecular Sciences Laboratory) at Pacific Northwest National Laboratory (PNNL), where he worked since 1983.
At PNNL, Jeff worked previously as
both a Technical Group Leader and Staff Scientist in High Performance Computational
Prior to joining PNNL, he worked as a Staff Scientist with IBM at the Utah Supercomputing Institute, an Associate Professor of Chemistry at Malone College in Canton, Ohio, and a postdoctoral fellow at Case Western Reserve University and at the University of Utah.
Jeff received his Ph.D. in Theoretical Physical Chemistry in 1983 at Texas A&M University and B.A. degrees in both Chemistry and Mathematics at Malone College (in Ohio) in 1978.