The Mathematical Physics Group is located at the Department of Mathematics of the University of Helsinki, at the Kumpula campus. The address is Gustaf Hällströmin katu 2, which you can find on this map. From the central railway station you can take for example one of the buses 55, 71, 73B, 75, 77, 730, 731, 732, 734, 741, 742 or tram 6 to the stop at Arabia shopping mall. The department is then on top of the hill on your left.
Please refer to the People web page for contact information concenring individual group members.