Vacuum instabilities in models with spontaneous symmetry breaking (original) (raw)
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A very short introduction to Radiative Spontaneous Symmetry Breaking
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The Coleman-Weinberg mechanism, also known as Radiative Spontaneous Symmetry Breaking, is a possible alternative to the Higgs mechanism. It also generates masses in apparently massless quantum field theories, what is generally necessary in the study of gauge theories. The central idea is that quantum corrections, coming from loop diagrams, can alter the parameters of the theory, even the position of the minima of the potential of scalar particles, thus, causing spontaneous symmetry breaking. In this work, we first present the formalism allowing a full quantum description of the vacuum of quantum field theories, and, in what follows, we apply it in the study of the vacuum configuration of a simple example, a scalar massless theory, and in the study of more complicated models, such as massless scalar electrodynamics and a model for radiative electroweak symmetry breaking. We conclude by discussing other possible applications of the Coleman-Weinberg mechanism and its importance in current Beyond the Standard Model physics.
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