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Professor J. Michael Kosterlitz is a renowned physicist who has made significant contributions to the field of condensed matter physics. He is particularly known for his work on the Kosterlitz-Thouless transition, which describes the behavior of two-dimensional superfluids and superconductors. Kosterlitz received the Nobel Prize in Physics in 2016 for this work, along with David J. Thouless and F. Duncan M. Haldane.