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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2005

Optimization of field-dependent nonperturbative renormalization group flows

Résumé

We investigate the influence of the momentum cutoff function on the field-dependent nonperturbative renormalization group flows for the three-dimensional Ising model, up to the second order of the derivative expansion. We show that, even when dealing with the full functional dependence of the renormalization functions, the accuracy of the critical exponents can be simply optimized, through the principle of minimal sensitivity, which yields $\nu = 0.628$ and $\eta = 0.044$.

Dates et versions

hal-00126090 , version 1 (23-01-2007)

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Léonie Canet. Optimization of field-dependent nonperturbative renormalization group flows. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2005, 71, pp.012418. ⟨hal-00126090⟩
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