University of California, Los Angeles
- We have recently developed a formalism to calculate quasiparticle energies within the GW approximation using stochastic orbitals. The GW approximation offeres a highly accurate theory for calculatiing quasiparticle energies in a semiconducting materials. Practical use, however, is limited by the theoretical fourth-order scaling with respect to system size.
University of California, Santa Barbara
- My research is focused on the theory of electronic structure and excited state phenomena in large (nanoscopic) systems. I develop stochastic methods for investigation of quasiparticles, namely the time-dependent density functional theory and the many-body perturbation theory. I use novel computational approaches to characterize systems ranging from small molecules to nanoparticles with thousands of electrons at the ab-initio level of theory.
University of California, Berkeley
- Prof. Rabani’s research involves the development of theoretical and computational tools to investigate fundamental properties of nanostructures. His research covers structural, electronic and optical properties of nanocrystals, doping of nanoparticles, exciton and multiexciton dynamics at the nanoscale, and transport in correlated nano-junctions. Much of this relies on the development of stochastic electronic structure techniques to describe the ground and excited state properties in large-scale nanostructures. In addition, Prof. Rabani has pioneered real-time approaches to nonequilibrium many-body quantum dynamics to describe quantum liquid and glasses and to explore electron-electron and electron-phonon interactions in nano-junctions.
The Hebrew University of Jerusalem, Israel
- Professor Roi Baer of the Hebrew University of Jerusalem is a theoretical chemist, developing new theories and computational methods to predict the properties of molecules, nanocrystals and in general materials directly from the basic laws of quantum physics. His research focuses on the search of new ways for producing sustainable energy, including conversion of sunlight to electricity via solar-cells and the production of clean and efficient fuels from natural gas. Baer’s recent research involves development of new computational techniques for studying the behaviour of charge carriers in nanocrystals and polymers. More recently he has developed, with collaborators, superfast memory-compact algorithms, based on statistical polling, for performing electronic structure calculations on molecular systems of unprecidented size.
Wenjie Dou
Westlake University
- Wenjie’s research lies on the interplay of non-adiabatic dynamics and excited-state electronic structure theory in complex systems. Particularly, he is involved in developing stochastic resolution of identity approach to the imaginary-time and real-time second order Green’s functions (GF2), aiming to describe ground state, quasi-particle and neutral excitations for molecules and extended systems.
Ming Chen
- Dr. Chen’s research focuses on low scaling electronic structure theory especially linear scaling density functional theory. With stochastic approaches and various noise reduction techniques, he has developed linear scaling density functional theory methods to accurately and efficiently model ground state properties of extended systems that require large system sizes. He is also interested in improving accuracy of stochastic excited-state electronic structure methods with noise reduction techniques.