The Physics and Astronomy Department at Lehman College is active in research in theoretical physics, particularly in the areas of astrophysics, condensed matter physics, high-energy physics and quantum optics/quantum information.  All faculty members are distinguished researchers and mentors with a large number of publications and citations in major peer reviewed journals. Research is supported by grants from the National Science Foundation, the U.S. Department of Energy, the Air Force Office of Scientific Research, and the Professional Staff Congress, CUNY. There are current research collaborations with City College at CUNY, Columbia University, Illinois State University, Instituto de Ciencia de Materiales de Madrid, Johannes-Gutenberg-Universität Mainz, Kavli Institute for Theoretical Physics, New York University, University of Barcelona, Université de Versailles, and York University.