paper

Specific heat amplitude ratios for anisotropic Lifshitz critical behaviors

arXiv:cond-mat/0304088 · doi:10.1103/PhysRevB.68.052408

Abstract

We determine the specific heat amplitude ratio near a -axial Lifshitz point and show its universal character. Using a recent renormalization group picture along with new field-theoretical -expansion techniques, we established this amplitude ratio at one-loop order. We estimate the numerical value of this amplitude ratio for and . The result is in very good agreement with its experimental measurement on the magnetic material . It is shown that in the limit it trivially reduces to the Ising-like amplitude ratio.

8 pages, RevTex, accepted as a Brief Report in Physical Review B

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