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California State University, Long Beach
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Chi Yu (Sue) Hu

Professor Emeritus, Quantum Scattering Theory

Ph.D., M.I.T., 1962
B.S., National Taiwan University, Taiwan, 1955

Office: FO5, Room 211

California State University, Long Beach
Department of Physics & Astronomy
1250 Bellflower Blvd.
Long Beach, CA 90840-3901

Phone (562) 985-7821 Office
Fax: (562) 985-7924


Research Interest:
Few-Body Theory.

More than half a century since the discovery of the Schrodinger equation ,the most challenging aspects of the non-relativistic quantum 3-Body systems remained untouched as late as the 1990's. Indeed, it is hard to believe for people outside of our field. For example, The positron-Hydrogen collision system were investigated most thoroughly only up to the two open channel region. Our group, using a more powerful tool, the Modified Faddeev equation, were able to calculate differential cross sections in regions where there are numerous open channels!

Recently, we have constructed a theory of positron-electron annihilation in flight during e+ + H collision. This theory is applicable in all energy regions. It was considered impossible to do so in the atomic physics community. It took us more than two years to prove for ourselves and others that we have indeed the correct theory. Hence, our new tools enable us to discover new physics that would otherwise remains uncovered for another half a century!