Asım Orhan Barut (June 6, 1926 – December 5, 1994) was a Turkish-American theoretical physicist. Education He received his undergraduate diploma and his Ph.D. degree both from the Swiss Federal Institute of Technology in Zurich in 1949 and 1952, respectively. He pursued his postdoctoral studies at the University of Chicago during 1953–1954. Academic life Barut was an assistant professor at Reed College during 1954-55 and then joined the faculty at Syracuse University in 1956. He became a professor of physics at the University of Colorado at Boulder in 1962 and served for 32 years. Research areas His research interests centered on group theoretic methods in physics. His books include Theory of the Scattering Matrix, Electrodynamics and Classical Theory of Fields and Particles and Representations of Noncompact Groups and Applications. Asım Orhan Barut was elected a fellow of the American Physical Society in 1966. Publications Barut's books Quantum Systems, Barut, Asim O.; Feranchuk, I. D.; Shnir, Yu M., 1995, , World Scientific Publishing Company, Incorporated. Polarization Dynamics in Nuclear & Particle Physics, Barut, Asim O., Paver, N.; Penzo, A.; Raczka, R., 1993, , World Scientific Publishing Company. Spin & Polarization Dynamics in Nuclear & Particle Physics, 1990, , World Scientific Publishing Company. New Frontiers in Quantum Electrodynamics & Quantum Optics, Barut, Asim O., 1990, , Plenum Publishing Corporation. Geometry & Physics, Barut, Asim O., 1989, , American Institute of Physics (A I P Press). Dynamical Groups & Spectrum Generating Algebra, Barut, Asim O.; Bohm, A.; Ne'Eman, Yuval, 1988, , World Scientific Publishing Company. Dynamical Groups & Spectrum Generating Algebra, Barut, Asim O.; Bohm, A.; Ne'Eman, Yuval, 1988, , World Scientific Publishing Company. Scattering Theory, Barut, Asim O. 1969, , Gordon & Breach Publishing Group. Electrodynamics and Classical Theory of Fields and Particles, 1964, Macmillan Company. 2012 Dover reprint Editorships Selected Scientific Papers of E. U. Condon, Barut, Asim O., 1991, , Springer-Verlag New York. Selected Popular Writings of E. U. Condon, Barut, Asim O., 1991, , Springer-Verlag New York. Selected Scientific Papers of Alfred Landé, Barut, Asim O. (ed.), 1987, , Kluwer Academic Publishers. Conformal Groups & Related Symmetries - Physical Results & Mathematical Background, Barut, Asim O. (ed.), 1986, , Springer-Verlag New York. Quantum Space & Time - The Quest Continues, Barut, Asim O. (ed.), 1984, , Cambridge University Press. Quantum Electrodynamics & Quantum Optics, Barut, Asim O. (ed.), 1984, , Plenum Publishing Corporation. Quantum Theory, Groups, Fields & Particles,