Local criticality close to a quantum Lifshitz point

Details Local criticality close to a quantum Lifshitz point Local criticality close to a quantum Lifshitz point

2003-08-12

arxiv.org/abs/cond-mat/0308238v1

Physics

Condensed Matter

Strongly Correlated Electrons

to be published in the Proceedings of ICM2003 (JMMM) with two extra figures, uses espcrc2.sty

Scientific paper

10.1016/j.jmmm.2003.11.097

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 $q$-space.

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