✦ LIBER ✦
Variational resummation for ϵ-expansions of critical exponents of nonlinear O(n)-symmetric σ-model in 2+ϵ dimensions
✍ Scribed by Hagen Kleinert
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 163 KB
- Volume
- 264
- Category
- Article
- ISSN
- 0375-9601
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✦ Synopsis
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 D y 2 , whose first five weak-coupling expansion coefficients ˜Ž . 4 of powers of ´are known from ´-expansions of critical exponents in O n -symmetric f -theory in D s 4 y ´dimensions.