Krzysztof Gawędzki is a mathematical physicist. Much of his works is related to conformal field theory, especially geometric aspects of WZNW models. More recently he studies turbulence. He has helped identidy the Kalb-Ramond field/B-field with a cocycle in ordinary differential cohomology (in Deligne cohomology/a bundle gerbe with connection).
Pronounciation note: the Polish ‘ę’ (cf. wikipedia) has a nazalization.
Topological actions in two-dimensional quantum field theories Nonperturbative quantum field theory (Cargèse, 1987), 101–141, NATO Adv. Sci. Inst. Ser. B Phys., 185, Plenum, New York, 1988.
Lectures on CFT (from Park City, published in QFT and strings for mathematicians, Dijkgraaf at al editors, site) source, dvi, ps