Abstract
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 of the derivative expansion leads to and to an anomalous dimension which is significantly improved compared with lower orders calculations.
- Received 20 May 2003
DOI:https://doi.org/10.1103/PhysRevB.68.064421
©2003 American Physical Society