2017/01/03 by Anirban Karan, Karan, Anirban
Computer Science · Economics, Econometrics and Finance · Physics and Astronomy · #Complex Systems and Time Series Analysis #Computational Physics and Python Applications #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #Particle physics theoretical and experimental studies #Quantum Mechanics and Applications
paper · pdf · doi:10.48550/arxiv.1701.00779
openalex publication_date 2017/01/03 · openalex created_date 2022/09/30 · openalex updated_date 2026/07/28
We know that demanding SU(2)L\× U(1)Y gauge symmetry of Lagrangian is\na "sufficient" condition to describe electroweak interactions, however, in this\npaper, we have tried to find whether it's a "necessary" condition or not. We\nhave used a different approach to describe electroweak interactions without\nusing any SU(2)L doublet or SU(2)L generator and incorporate some new\nphysics aspects into theory. In this method, we only need local gauge\ninvariance of Lagrangian under a "generalised U(1)Q gauge transformation",\nwhere Q is electric charge (not to be confused with usual U(1)\ntransformation). Under this gauge transformation, all charged fields including\ncharged gauge bosons transform as H(\μ)\→\nH(\μ)eiqh\θ and all neutral gauge bosons transforms as\nV_\μ\→ V_\μ+\Λ \∂_\μ \θ. Nevertheless, SU(2)L\nsymmetry can be restored by imposing constraints on some parameters and thus\nstandard model can be considered as a special case of this model. Hence, it\nturns out that SU(2)L\× U(1)Y gauge symmetry is a "sufficient" but "not\nnecessary" condition for electroweak interactions.\n