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Solutions of renormalization group flow equations with full momentum dependence

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 نشر من قبل Wschebor Nicolas
 تاريخ النشر 2008
  مجال البحث فيزياء
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We demonstrate the power of a recently-proposed approximation scheme for the non-perturbative renormalization group that gives access to correlation functions over their full momentum range. We solve numerically the leading-order flow equations obtained within this scheme, and compute the two-point functions of the O(N) theories at criticality, in two and three dimensions. Excellent results are obtained for both universal and non-universal quantities at modest numerical cost.



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