Daniel Scherwin Koltun (1933–2014) was an American theoretical physicist, specializing in nuclear physics.
[2] 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.
[1]Koltun held an Alfred P. Sloan Research Fellowship from 1969 to 1971 and was elected a Fellow of the American Physical Society in 1972.
The University of Rochester's flag (with the motto Meliora, located on the Eastman Quadrangle) was flown at half-staff in his memory.