Non-analyticity of the Callan-Symanzik \(\beta\)-function of two-dimensional O\((N)\) models. (Q2703441)

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Non-analyticity of the Callan-Symanzik \(\beta\)-function of two-dimensional O\((N)\) models.
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    5 March 2001
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    Non-analyticity of the Callan-Symanzik \(\beta\)-function of two-dimensional O\((N)\) models. (English)
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