Critical exponents and equation of state of the three-dimensional Heisenberg universality class

@article{Campostrini2002CriticalEA,
  title={Critical exponents and equation of state of the three-dimensional Heisenberg universality class},
  author={Massimo Campostrini and Martin Hasenbusch and Andrea Pelissetto and Paolo Rossi and Ettore Vicari},
  journal={Physical Review B},
  year={2002},
  volume={65},
  pages={144520}
}
We improve the theoretical estimates of the critical exponents for the three-dimensional Heisenberg universality class. We find gamma=1.3960(9), nu=0.7112(5), eta=0.0375(5), alpha=-0.1336(15), beta=0.3689(3), and delta=4.783(3). We consider an improved lattice phi^4 Hamiltonian with suppressed leading scaling corrections. Our results are obtained by combining Monte Carlo simulations based on finite-size scaling methods and high-temperature expansions. The critical exponents are computed… 
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