TY - JOUR T1 - Non-linear sigma-models in noncommutative geometry: fields with values in finite spaces JF - Mod. Phys. Lett. A 18 (2003) 2371-2379 Y1 - 2003 A1 - Ludwik Dabrowski A1 - Thomas Krajewski A1 - Giovanni Landi AB - We study sigma-models on noncommutative spaces, notably on noncommutative tori. We construct instanton solutions carrying a nontrivial topological charge q and satisfying a Belavin-Polyakov bound. The moduli space of these instantons is conjectured to consists of an ordinary torus endowed with a complex structure times a projective space $CP^{q-1}$. PB - World Scientific UR - http://hdl.handle.net/1963/3215 U1 - 1086 U2 - Mathematics U3 - Mathematical Physics ER -