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Anomalous dimesions for the nonlinear sigma-model in 2 + ε dimensions (I)

✍ Scribed by Franz Wegner


Book ID
116146476
Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
507 KB
Volume
280
Category
Article
ISSN
0550-3213

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Variational resummation for ϵ-expansions
✍ Hagen Kleinert 📂 Article 📅 2000 🏛 Elsevier Science 🌐 English ⚖ 163 KB

We develop a method for extracting accurate critical exponents from perturbation expansions of the O n -symmetric nonlinear s-model in D s 2 q e dimensions. This is possible by considering the e-expansions in this model as strong-cou-Ž . Ž . pling expansions of functions of the variable ´' 2 4y D r