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Renormalization group approach of itinerant electron systems near the Lifshitz point

C. P. Moca·I. Tifrea·M. Crisan
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Abstract

Using the renormalization approach proposed by Millis for the itinerant electron systems we calculated the specific heat coefficient $γ(T)$ for the magnetic fluctuations with susceptibility $χ^{-1}\sim |δ+ω|^α+f(q)$ near the Lifshitz point. The constant value obtained for $α=4/5$ and the logarithmic temperature dependence, specific for the non-Fermi behavior, have been obtained in agreement with the experimental dat.

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C. P. Moca, I. Tifrea, M. Crisan. 1999-02-11. Renormalization group approach of itinerant electron systems near the Lifshitz point. https://doi.org/10.1103/physrevb.61.3247

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