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New posts in Perturbation Theory
How to unify the cumulant expansion and Feynman diagram expansion?
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What's the difference between perturbative QCD, non-perturbative QCD, and gauge theory QCD?
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Struggling to understand degenerate perturbation theory
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QFT perturbation theory
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Drive frequency for second order quantum transitions
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Can we get full non-perturbative information of interacting system by computing perturbation to all order?
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One-loop Correction to Effective Action
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Perturbation Theory and Thermodynamic Limit
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Does QED really break down at the Landau pole?
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