# Professor Emeritus

PhD Lehigh University (1967)

#### Research Group

Condensed Matter Theory

#### Research Interest

The general area of research is in theoretical non equilibrium statistical mechanics of classical and quantum systems near and far from equilibrium. Most recently, attention has been focused on finite temperature Density Functional Theory for the description of exotic state conditions explored by new x-ray terrestrial sources and unknown states of exo-planets being observed. Prior to these efforts have been studies of granular matter, classical particles that represent diverse systems that can be modeled analogous to many-body systems of atoms: grains (sand, seeds), regolith of Mars, avalanches of snow/grains, origins of continuum mechanics. Continuum theoretical investigations of strongly coupled Coulomb systems has continued. This is part of a first principles theory for the structure and dynamics of classical and quantum confined charges. Related studies include the spectroscopy of atoms in plasmas used as diagnostics for laser fusion experiments.

#### Selected Publications

“Kinetic theory for strongly coupled Coulomb systems”, James Dufty and Jeffrey Wrighton, Phys. Rev. E **97**, 012149 (2018).

“Nonempirical Semi-local Free-Energy Density Functional for Warm Dense Matter”, V.V. Karasiev, James W. Dufty, and S.B. Trickey, Phys. Rev. Lett. **120**, 076401 (2018).

“Finite Temperature Scaling in Density Functional Theory”, J.W. Dufty and S.B. Trickey, Mol. Phys. **114**, 988 (2016).

“Classical Representation of a Quantum System at Equilibrium: Theory”, J. W. Dufty and S. Dutta, Phys. Rev. E **87**, 032101 (2013).

“Granular Fluids”, James W. Dufty in* Encyclopedia of Complexity and Systems Science*, R. Meyers, ed. (Springer, Heidelberg, 2009).

“Multiscale Modeling of Materials – Concepts and Illustration”, Aditi Mallik, Keith Runge, James Dufty, and Hai-Ping Cheng, J. Chem. Phys. **127**, 224707 (2007).

“Kinetic Theory and Hydrodynamics for a Low Density Granular Gas”, J. W. Dufty in *Challenges in Granular Physics*, T. Halsey and A. Mehta, eds. (World Scientific, NJ, 2002).

Kinetic Theory for Electron Dynamics in Semi-conductors and Plasmas”, J. Dufty, in *Dynamics: Models and Kinetic Methods for Non-Equilibrium Many Body Systems*, p. 473-490, edited by J. Karkheck, NATO ASI Series vol. 371 (Kluwer, Dordrecht, 2000).