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chapterNo Access
Field-Theoretic Approach to Second-Order Phase Transitions in Two- and Three-Dimensional Systems
- Giorgio Parisi
Field Theory, Disorder and Simulations01 Oct 1992
Preview Abstract
We review the physical principles which are at the basis of recent field-theoretic computations of the critical exponents in two- and three-dimensional systems. We concentrate on those points that do not show up explicitly in the more standard ε-expansion: they must be discussed with care if one uses a perturbative approach at fixed space dimensions (the loop expansion). We present in detail simple computations of the critical exponents, while we summarize the results of longer and more accurate computations.

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