Curtis Callan
American physicist
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Biography
Callan received his B.S. in physics from Haverford College. He then pursued graduate studies in physics at Princeton University, where he was a student under Sam Treiman. He received his Ph.D. in physics in 1964 after completing a doctoral dissertation titled "Spherically symmetric cosmological models."
His Ph.D. students include Vijay Balasubramanian, William E. Caswell, Peter Woit, Igor Klebanov and Juan Maldacena.
Callan is best known for his work on broken scale invariance (Callan–Symanzik equation) and has also made leading contributions to quantum field theory and string theory in the areas of dyon-fermion dynamics, string solitons and black holes.
Callan has been a member of the JASON defense advisory group since 1968, and was chair of the group from 1990 to 1995. He served as president of the American Physical Society (APS) in 2010. He was elected a Fellow of the APS in 1971.
Callan was elected as a member of the American Academy of Arts and Sciences in 1987 and as a member of the National Academy of Sciences in 1989.