Local criticality close to a quantum Lifshitz point
arXiv:cond-mat/0308238 · doi:10.1016/j.jmmm.2003.11.097
Abstract
Near quantum Lifshitz points the stiffness of the lifetime of the spin fluctuations is very small. This gives rise to a regime where the critical fluctuations are local in space but extended along the time directions. The Fermi liquid properties in this local quantum regime is governed by a single energy scale, the coherence temperature. These results are relevant for heavy fermions and frustrated systems whenever there is a competition between different instabilities in -space.
to be published in the Proceedings of ICM2003 (JMMM) with two extra figures, uses espcrc2.sty