Spontaneous symmetry breaking in quantum mechanics

Jasper van Wezel, Jeroen van den Brink

Research output: Contribution to journalArticle (Academic Journal)peer-review

22 Citations (Scopus)

Abstract

We present a mathematically simple procedure to explain spontaneous symmetry breaking in quantum systems. The procedure is applicable to a wide range of models and can be easily used to explain the existence of a symmetry broken state in crystals, antiferromagnets, and even superconductors. It has the advantage that it automatically brings to the fore the main players in spontaneous symmetry breaking: the symmetry-breaking field, the thermodynamic limit, and the global excitations of a “thin” spectrum.
Original languageEnglish
Pages (from-to)635
JournalAmerican Journal of Physics
Volume75
DOIs
Publication statusPublished - 23 Mar 2007

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