Critical Exponents without the Epsilon Expansion
arXiv:hep-ph/9403324 · doi:10.1016/0370-2693(94)01005-6
Abstract
We argue that the sharp-cutoff Wilson renormalization group provides a powerful tool for the analysis of second-order and weakly first-order phase transitions. In particular, in a computation no harder than the calculation of the 1-loop effective potential, we show that the Wilson RG yields the fixed point couplings and critical exponents of 3-dimensional scalar field theory, with results close to those obtained in high-order $\ep$-% expansion and large- calculations. We discuss the prospects for an even more precise computation.
8 pages, CLNS 94/1279, latex
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