Thursday, April 19, 2007 12:00 PM Harvard University Condensed Matter Theory Seminar Lyman 425 "Dirty bosons: Twenty years later " Peter B. Weichman BAE Systems ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Heidi E. Schafer Staff Assistant to Profs. Halperin, Nelson, Sachdev, Tinkham Harvard Physics Department 17 Oxford Street Cambridge, MA 02138 phone: 617-495-8852 fax: 617-496-2545