Multiple Point Model and Phase Transition Couplings in the Two-Loop Approximation of Dual Scalar Electrodynamics

Details Multiple Point Model and Phase Transition Couplings in the Two-Loop Approximation of Dual Scalar Electrodynamics Multiple Point Model and Phase Transition Couplings in the Two-Loop Approximation of Dual Scalar Electrodynamics

2001-12-13

arxiv.org/abs/hep-ph/0112183v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 3 figures, talk at the International Workshop on "What Comes Beyond the Standard Model?", Bled, Slovenia, 17 - 27 Ju

Scientific paper

The phase transition "Coulomb-confinement" in the U(1) regularized gauge theory is considered in the framework of dual Abelian Higgs model of scalar monopoles (shortly: Higgs monopole model). The effective potential analogous to the Coleman-Weinberg's one, improved by the renormalization group equation, is constructed, using beta-functions in the two-loop approximation. The value of QED critical fine structure constant was calculated: $\alpha_{crit}\approx 0.208$, in correspondence with lattice result: $\alpha_{crit}^{lat}\approx 0.20\pm 0.015$.

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