Strong-Coupling φ⁴-Theory in 4- ε Dimensions and Critical Exponents
classification
❄️ cond-mat
hep-th
keywords
criticaldimensionsepsilonexponentsrenormalizationtheorybarebehavior
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With the help of variational perturbation theory we continue the renormalization constants $\phi^4$-theories in $4- \epsilon$ dimensions to strong bare couplings $g_0$ and find their power behavior in $g_0$, thereby determining all critical exponents without renormalization group techniques.
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