Piotr Piecuch (born January 21, 1960) is a Polish-born American physical chemist. He holds the titles of University Distinguished Professor and MSU Research Foundation Professor in the Department of Chemistry at Michigan State University. He supervises a group, whose research focuses on theoretical and computational chemistry as well as theoretical and computational physics, particularly on the development and applications of many-body methods for accurate quantum calculations for molecular systems and atomic nuclei, including methods based on coupled cluster theory, mathematical methods of chemistry and physics, and theory of intermolecular forces. His group is responsible for the development of the coupled-cluster computer codes incorporated in the widely used GAMESS (US) package and maintains several open-source codes on GitHub.
Education and academic posts Piecuch studied chemistry at the undergraduate and graduate levels at the University of Wrocław, Poland. He received his M.S. degree in 1983 and Ph.D. degree in 1988. After postdoctoral and research faculty appointments at the University of Waterloo, Canada (1988–91, 1994–95), where he worked with Professors Josef Paldus and Jiří Čížek, University of Arizona (1992–93), where he worked with Professor Ludwik Adamowicz, University of Toronto, Canada (1995–97), where he worked with the recipient of the 1986 Nobel Prize in Chemistry, Professor John Polanyi, and University of Florida (1997–98), where he worked with Professor Rodney J. Bartlett, he joined the faculty at Michigan State University as an assistant professor in 1998. He was promoted to an associate professor in 2002 and professor in 2004. He was named a University Distinguished Professor in 2007, and in 2020, he was awarded the title of MSU Research Foundation Professor. While his primary appointment at Michigan State University is with the Department of Chemistry, he has also held adjunct professorship appointments in the Department of Physics and Astronomy (2003–10, 2014-). During his tenure at Michigan State University, he was named a visiting professor at the University of Coimbra, Portugal (2006), Kyoto University, Japan (2005), Institute for Molecular Science, National Institutes of Natural Sciences, in Okazaki, Japan (2012–13), and a Clark Way Harrison Distinguished Visiting Professor at the Washington University in St. Louis, United States (2016). The latter visit resulted in the creation of the online lecture series on algebraic and diagrammatic methods for many-fermion systems, consisting of more than 40 high-definition videos, available on YouTube.
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