Journal
PHYSICAL REVIEW B
Volume 68, Issue 6, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.68.064421
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On the example of the three-dimensional Ising model, we show that nonperturbative renormalization group equations allow one to obtain very accurate critical exponents. Implementing the order partial derivative(4) of the derivative expansion leads to nu=0.632 and to an anomalous dimension eta=0.033 which is significantly improved compared with lower orders calculations.
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