Introduction to renormalization

Details Introduction to renormalization Introduction to renormalization

2006-06-06

arxiv.org/abs/cond-mat/0606139v1

Condens. Matter Phys. 9, 325-350 (2006)

Physics

Condensed Matter

Statistical Mechanics

Lecture given at the Mochima spring school on foundations of statistical and mesoscopic physics, Mochima, Venezuela, June 2006

Scientific paper

In these lectures I discuss peculiarities of the critical behaviour of ``non-ideal'' systems as it is explained by the renormalization group approach. Examples considered here include account of the single-ion anisotropy, structural disorder, frustrations. I introduce main ideas of renormalization and show how it serves the explanation of typical features of criticality in the above systems: softening of the phase transition, changes in the universality class, complicated effective critical behaviour.

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