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The Phase Diagram of a U(1) Higgs-Yukawa Model at Finite $lambda$ | | A. Hasenfratz
; K. Jansen
; Y. Shen
; | | Date: |
6 Jul 1992 | | Journal: | Nucl. Phys. B394 (1993) 527 | | Subject: | hep-lat | | Abstract: | In this paper we investigate how the phase diagram of a U(1) symmetric Higgs-Yukawa system depends on the scalar self coupling $lambda$. The phase diagram of similar models with continuous symmetry were extensively studied in the infinite scalar self coupling $lambda=infty$ limit. Recent analytical and numerical calculations at zero self coupling showed qualitatively different phase diagram, raising the question of the $lambda$ 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. | | Source: | arXiv, hep-lat/9207006 | | Services: | Forum | Review | PDF | Favorites | |
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