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arXiv · hep-ph/9911492

An Optimised Perturbation Expansion For a Global O(2) Theory

T. S. Evans·M. Ivin·M. Mobius
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Abstract

We use an optimised perturbation expansion called the linear delta-expansion to study the phase transition in a Higgs sector with a continuous symmetry and large couplings. Our results show how to use this non-perturbative method successfully for such problems. We also show how to simplify the method without losing any flexibility.

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T. S. Evans, M. Ivin, M. Mobius. 1999-11-25. An Optimised Perturbation Expansion For a Global O(2) Theory. https://doi.org/10.1016/s0550-3213(00)00120-6

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