Don B. Lichtenberg

Self Portrait

Indiana University, Department of Physics, Bloomington, IN 47405, U.S.A.

Office: Swain West 228

E-mail: lichten@indiana.edu

Phone: (812)-855-2329 Fax: (812)-855-5533


Teaching

I taught both graduate and undergraduate physics courses at Indiana University between 1963 and 1993. I retired in January, 1994.

Since retiring, I taught a graduate course in elementary particle physics
in the fall semester of 1997 and shared teaching the second semester of a
general physics course in the spring semester of 2002.


Research

My research is in elementary-particle theory, and nearly all my recent work has been within the framework of the standard model of elementary particles. I have been particularly interested in the properties of hadrons, a difficult problem in the standard model because making predictions about hadrons requires solving QCD (quantum chromodynamics) in the non-perturbative regime.

Rather than solving QCD numerically on a lattice, a procedure that requires large amounts of computer time, I construct simplified models that I can solve easily but that incorporate some of the features of QCD. As an example, if I take a simple quark model approach, I can regard a meson as a state of a quark and antiquark bound in a potential. This problem is not hard to solve. Similarly, I can regard a baryon as a bound state of three quarks, or even simpler, as a bound state of a quark and a diquark. Recently, I have treated so-called exotic hadrons made of more than three quarks.

More information about my research


Updated: August 2003