Robert Grayson Littlejohn is an American

physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate caus ...

, professor emeritus at the

University of California, Berkeley The University of California, Berkeley (UC Berkeley, Berkeley, Cal, or California) is a public land-grant research university in Berkeley, California. Established in 1868 as the University of California, it is the state's first land-grant u ...

. Littlejohn completed a bachelor's degree and doctorate in physics at Berkeley, in 1975 and 1980, respectively. He then served as a post-doctoral researcher at the La Jolla Institute and the

University of California, Los Angeles The University of California, Los Angeles (UCLA) is a public land-grant research university in Los Angeles, California. UCLA's academic roots were established in 1881 as a teachers college then known as the southern branch of the California St ...

before returning to teach at Berkeley in 1983. He retired in 2018. His research interests lie in the field of atomic, molecular, nuclear, optical, and plasma physics, and nonlinear dynamics, especially in the mathematical aspects of basic problems in applied physics. In recent years this has included the application of geometrical methods to few-body physics. In 1987, he was elected a fellow of the

American Physical Society The American Physical Society (APS) is a not-for-profit membership organization of professionals in physics and related disciplines, comprising nearly fifty divisions, sections, and other units. Its mission is the advancement and diffusion of k ...

, "for the introduction and development of noncanonical Hamiltonian and Lagrangian methods for the study of charged particle motion and nonlinear plasma dynamics."

References

{{DEFAULTSORT:Littlejohn, Robert Grayson Year of birth missing (living people) Living people 20th-century American physicists 21st-century American physicists Fellows of the American Physical Society University of California, Berkeley alumni University of California, Berkeley College of Letters and Science faculty