In [19] a method was presented, which constructs via loop group splittings all harmonic maps into a compact symmetric space. The present paper generalizes this method to all spaces $G/K$ , where $G$ is an arbitrary Lie group (semisimple or not) and $K$ is the fixpoint group of some involution of $G$ . The method is illustrated by a number of examples.
@article{1160745814,
author = {BALAN, Vladimir and DORFMEISTER, Josef},
title = {Weierstrass-type representation for harmonic maps into general symmetric spaces via loop groups},
journal = {J. Math. Soc. Japan},
volume = {57},
number = {4},
year = {2005},
pages = { 69-94},
language = {en},
url = {http://dml.mathdoc.fr/item/1160745814}
}
BALAN, Vladimir; DORFMEISTER, Josef. Weierstrass-type representation for harmonic maps into general symmetric spaces via loop groups. J. Math. Soc. Japan, Tome 57 (2005) no. 4, pp. 69-94. http://gdmltest.u-ga.fr/item/1160745814/