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29 March 2024
 
  » arxiv » quant-ph/9905088

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Gaussian, Mean Field and Variational Approximation: the Equivalence
E. Prodan ;
Date 26 May 1999
Subject quant-ph
AbstractWe show the equivalence between the three approximation schemes for self-interacting (1+1)-D scalar field theories. Based on rigorous results of [1, 2], we are able to prove that the Gaussian approximation is very precise for certain limits of coupling constants. The $lambda phi ^{4}+sigma phi ^{2}$ model will be used as a concrete application.
Source arXiv, quant-ph/9905088
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