Daniel S. Koltun

Daniel S. Koltun
Born	(1933-12-07)December 7, 1933
Died	April 9, 2014(2014-04-09) (aged 80) Haverford, Pennsylvania
Nationality	American
Alma mater	Harvard University; Princeton University
Known for	Koltun sum rule
Awards	Guggenheim Fellowship (1976)
Scientific career
Fields	Nuclear physics
Institutions	University of Rochester

Daniel Scherwin Koltun (1933–2014) was an American theoretical physicist, specializing in nuclear physics.

Koltun graduated in 1955 from Harvard University with a bachelor's degree and in 1961 from Princeton University with a Ph.D. in physics with thesis New methods of spectroscopy applied to the nuclear 1-p shell. He became in 1962 a member of the University of Rochester's physics faculty and retired there in 2004 as professor emeritus.

He was a visiting staff member at Los Alamos Meson Physics Facility over a span of 18 years and served on the Facility's Program Advisory Committee. He was a visiting fellow at the Weizmann Institute of Science and at the Niels Bohr Institute. He was a visiting professor from 1976 to 1977 at Tel Aviv University and in 1985 at the Hebrew University of Jerusalem.

A theoretical physicist, Koltun's research interests and activities were largely focused on the study of nuclear structure and reactions at intermediate and high energy, as well as with many-body theory. He was interested in understanding the dynamics of nuclei as many-body systems, and the role of subnucleon constituents in this problem, including mesons – particularly pions – and quarks. In addition to being a leader in the meson physics community, Koltun was known for what is called the "Koltun Sum Rule" for the scattering of electrons from nuclear targets.

Koltun held an Alfred P. Sloan Research Fellowship from 1969 to 1971 and was elected a Fellow of the American Physical Society in 1972.

Upon his death he was survived by his widow, two children, and four grandchildren. The University of Rochester's flag (with the motto Meliora, located on the Eastman Quadrangle) was flown at half-staff in his memory.

Selected publications

• with Judah M. Eisenberg: Theory of Meson Interactions with Nuclei. New York: Wiley. 1980; 403 pages{{cite book}}: CS1 maint: postscript (link)
• with Judah M. Eisenberg: Quantum Mechanics of Many Degrees of Freedom. New York: Wiley. 1988. ISBN 0471888427; pbk, 313 pages{{cite book}}: CS1 maint: postscript (link)