Authors: S. Wessel and M. Troyer http://ArXiv.org/cond-mat/0505298 Phys. Rev. Lett. 95, 127205 (2005); Authors: D. Heidarian and K. Damle http://ArXiv.org/cond-mat/0505257 Phys. Rev. Lett. 95, 127206 (2005); Authors: R. G. Melko, A. Paramekanti, A. A. Burkov, A. Vishwanath, D. N. Sheng, and L. Balents http://ArXiv.org/cond-mat/0505258 Phys. Rev. Lett. 95, 127207 (2005). Authors: R. G. Melko, A....