Variational resummation for \(\varepsilon\)-expansions of critical exponents of nonlinear \(O(n)\)-symmetric \(\sigma\)-model in \(2+\varepsilon\) dimensions

DOI10.1016/S0375-9601(99)00833-6zbMath0949.81024arXivhep-th/9808145MaRDI QIDQ1569479

Hagen Kleinert

Publication date: 3 July 2000

Published in: Physics Letters. A (Search for Journal in Brave)

Full work available at URL: https://arxiv.org/abs/hep-th/9808145

zbMATH Keywords

critical exponentsperturbation expansions\(\varepsilon\)-expansionnonlinear \(\sigma\)-modelstrong-coupling expansions

Mathematics Subject Classification ID

Model quantum field theories (81T10) Continuum limits in quantum field theory (81T27)

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Cites Work

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• Improved convergence proof of the delta expansion and order dependent mappings
• Convergence of scaled delta expansion: Anharmonic oscillator
• Scaling property of variational perturbation expansion for a general anharmonic oscillator with \(x^p\)-potential
• Convergence behavior of variational perturbation expansion---a method for locating Bender-Wu singularities
• Critical exponents without \(\beta\)-function

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