Noncommutative models in physics a collaboration between Hanover and Mexico City (UAM) duration: 2009-2013 researchers: Abou Zeid, Goffeng, Lechtenfeld; Linares, Maceda, Macias, Gonzales; Domrin funding: DAAD-CONACyT, DFG-CONACyT (exchange with Mexico)
Algebraic and Geometric Properties of (Conformal) Mechanics with Extended Supersymmetry a collaboration between Hanover and Yerevan duration: 2009-2014 researchers: Lechtenfeld, Schwerdtfeger, Thürigen; Hakobyan, Nersessian, Ohanyan, Saghatelyan, Yeghikyan; Krivonos funding: Volkswagen Foundation I/84 496 (subsistence for Armenian colleagues, travel, 6 months PhD student)
Noncommutativity and String Theory a collaboration between Hanover and Tokyo Metropolitan University, Japan duration: 2006-2008 researchers: Lechtenfeld, Brödel, Ivanova, Kürkçüoglu, Petersen, Popov, Wimmer, Wolf; Ketov, Kitazawa, 3 PhD students funding: DFG 446 JAP 113/319 (travel)
Strings, Matrix Models, Self-Dual Field Theories and Integrability duration: 2000-2009 researchers: Albertsson, Brödel, Ivanova, Jünemann, Kling, Lechtenfeld, Popov, Sämann, Spendig, Uhlmann, Wolf; Siegel funding: DFG LE 838/7 & 10 (1 postdoc) (in priority program 00-06, then 07-08), Volkswagen foundation I/77 621 (sabbatical research)
Quantum Field Theoretical Methods in Particle Physics, Gravity, Statistical Physics and Quantum Optics a graduate study program (PhD training and research) jointly with Profs. Dragon, Everts, Frahm, Lewenstein, Mikeska, Schulz and Dr. Flohr duration: 1997-2006 funding: DFG GRK 282 (1 postdoc, 6-7 PhD students, guests and travel)
Quantum Symmetries and Duality in Susy Field Theories and Superstrings a collaboration between HU Berlin / Hanover and Dubna / Tomsk, Russia duration: 1996-2001 researchers: Dorn, Lüst, Otto, Preitschopf; Dragon, Ketov, Lechtenfeld; Theisen, Kuzenko; Ivanov, Krivonos, Pashnev, Popov, Sorin, Zupnik; Buchbinder, Deriglazov, Lavrov, Perschin, Sibiryakov funding (travel): DFG 436 RUS 113/359, Heisenberg-Landau, INTAS
Twisted Group Lattices: Lattice Field Theory with Torsion a collaboration between Hanover University and City College, New York duration: 1994-1998 researchers: Lechtenfeld; Samuel funding: NATO CRG 930761 (collaborative research grant)
Black Holes with Self-Interacting Scalar Fields duration: 1994-1997 researchers: Dennhardt, Lechtenfeld, Peters, Reinhardt, Unbehaun
Integrable Models in Conformal Field Theory and Strings a collaboration between Hanover University and ITEP, Moscow duration: 1995 - 1996 researchers: Ketov, Lechtenfeld, Skarke; Kharchev, Lebedev, Losev, Mironov, Polyubin funding: Volkswagen foundation I/70 047 (collaborative research grant)