C G Honorato
Articles written in Pramana – Journal of Physics
Volume 73 Issue 6 December 2009 pp 1023-1039
$U_{e}(1)$-covariant $R_{\xi}$ gauge for the two-Higgs doublet model
A $U_{e}(1)$-covariant $R_{\xi}$ gauge for the two-Higgs doublet model based on BRST (Becchi–Rouet–Stora–Tyutin) symmetry is introduced. This gauge allows one to remove a significant number of nonphysical vertices appearing in conventional linear gauges, which greatly simplifies the loop calculations, since the resultant theory satisfies QED-like Ward identities. The presence of four ghost interactions in these types of gauges and their connection with the BRST symmetry are stressed. The Feynman rules for those new vertices that arise in this gauge, as well as for those couplings already present in the linear $R_{\xi}$ gauge but that are modified by this gauge-fixing procedure, are presented.
Volume 96, 2022
All articles
Continuous Article Publishing mode
Click here for Editorial Note on CAP Mode
© 2021-2022 Indian Academy of Sciences, Bengaluru.