Publicacions Matemàtiques, to appear

We show that in any right-angled Artin group whose defining graph has
chromatic number *k*, every non-trivial element has stable
commutator length at least 1/(6*k*). Secondly, if the defining
graph does not contain triangles, then every non-trivial element has
stable commutator length at least 1/20. These results are obtained via
an elementary geometric argument based on earlier work of Culler.

- pdf file (16 pages)