In a recent paper, Custers {\it et al.} \cite{custers} argue for the existence of a new metallic quantum critical phase at 0 K in the Ge-doped heavy-fermion system YbRh2Si2 in the presence of magnetic frustration. In here we discuss the consequences of this identification for the (more standard) field induced quantum critical phase.
@article{arxiv.1012.3379,
title = {Comment on "Evidence for a non Fermi liquid phase in Ge-substituted YbRh$_2$Si$_2$"},
author = {John Gaddy and Tom Heitmann and Jagat Lamsal and Wouter Montfrooij},
journal= {arXiv preprint arXiv:1012.3379},
year = {2010}
}