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Curtis Callan | |
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(photo: 1986) | |

Born | October 11, 1942 | (age 77)

Residence | U.S. |

Nationality | American |

Alma mater | Haverford College Princeton University |

Known for | Callan–Symanzik equation Contributions to instanton physics CGHS model Callan–Treiman relation |

Scientific career | |

Institutions | Princeton University |

Doctoral advisor | Sam Treiman |

Doctoral students | Philip Argyres Peter Woit Igor Klebanov Juan Maldacena William E. Caswell |

**Curtis Gove Callan Jr.** (born October 11, 1942) is a theoretical physicist and a professor at Princeton University. He has conducted research in gauge theory, string theory, instantons, black holes, strong interactions, and many other topics. He was awarded the Sakurai Prize in 2000 ("For his classic formulation of the renormalization group, his contributions to instanton physics and to the theory of monopoles and strings"^{[1]}) and the Dirac Medal in 2004.

Callan received his B.Sc. in physics from Haverford College. Later he studied physics under Sam Treiman at Princeton and in 1964 received his doctorate degree.^{[2]} His Ph.D. students include Philip Argyres, Vijay Balasubramanian, William E. Caswell, Peter Woit, Igor Klebanov, Juan Maldacena, Larus Thorlacius, Alberto Güijosa and Justin B. Kinney.

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 in 2010.^{[3]}

**^**APS Physics, "2000 J. J. Sakurai Prize for Theoretical Particle Physics Recipient" (accessed 22 July 2009).**^**Curtis Gove Callan, Jr. at the Mathematics Genealogy Project**^**"Curtis Callan". American Institute of Physics. Archived from the original on 2015-04-02.

- Research page at Princeton.
- Curtis Callan at the Mathematics Genealogy Project
- Callan's publications on INSPIRE-HEP.

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