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arXiv · hep-lat/9207006

The Phase Diagram of a U(1) Higgs-Yukawa Model at Finite $λ$

A. Hasenfratz·K. Jansen·Y. Shen
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Abstract

In this paper we investigate how the phase diagram of a U(1) symmetric Higgs-Yukawa system depends on the scalar self coupling $λ$. The phase diagram of similar models with continuous symmetry were extensively studied in the infinite scalar self coupling $λ=\infty$ limit. Recent analytical and numerical calculations at zero self coupling showed qualitatively different phase diagram, raising the question of the $λ$ dependence of the phase diagram. Here we use analytical (large $N_f$, perturbative and mean field) approximations as well as numerical simulations to investigate the system.

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A. Hasenfratz, K. Jansen, Y. Shen. 1992-07-06. The Phase Diagram of a U(1) Higgs-Yukawa Model at Finite $λ$. https://doi.org/10.1016/0550-3213(93)90024-j

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