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arXiv · 1306.2771

Analytical results for the four-loop RG functions in the 2D non-linear O(n) {\sigma}-model on the lattice

O. Veretin
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Abstract

We recalculate four-loop renormalization group functions in 2-dimensional nonlinear O(n) {\sigma}-model using coordinate-space method. The high accuracy of calculation allow us to find the analytical form of {\beta}- and {\gamma}-function (anomaluos dimension).

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O. Veretin. 2013-06-12. Analytical results for the four-loop RG functions in the 2D non-linear O(n) {\sigma}-model on the lattice. https://doi.org/10.1134/s1063779613030

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