  We consider a holographic set-up where relativistic invariance is broken by a
chemical potential, and a non-abelian internal symmetry is broken
spontaneously. We use the tool of holographic renormalization in order to infer
what can be learned purely by analytic boundary considerations. We find that
the expected Ward identities are correctly reproduced. In particular, we obtain
the identity which implies the non-commutation of a pair of broken charges,
which leads to the presence of Goldstone bosons with quadratic dispersion
relations.
