منابع مشابه
The Next-to-Minimal Coleman-Weinberg Model
In the standard model (SM) the condition that the Higgs mass parameter vanishes is stable under radiative corrections and yields a theory that can be renormalized using dimensional regularization. Thus, this model allows to predict the Higgs boson mass. However, it is phenomenologically ruled out in its minimal version. Here, we present a phenomenologically viable, minimal extension which only ...
متن کاملFinal Project The Coleman – Weinberg Potential
The Lagrangian density in the problem is L = − 1 4 (F µν) 2 + (D µ φ) † D µ φ − m 2 φ † φ − λ 6 (φ † φ) 2 , (1) where φ(x) is a complex scalar field in four spacetime dimensions (except for part (h)), and we are interested in the theory when m 2 = −µ 2 < 0. The covariant derivative includes the vector potential D µ φ = (∂ µ + ieA µ)φ. (2) I don't know why they chose this funny normalization for...
متن کاملThe Coleman - Weinberg Phase Transition in Extended Higgs Models Marc
In Coleman-Weinberg symmetry breaking, all dimensionful parameters vanish and the symmetry is broken by loop corrections. Before Coleman-Weinberg symmetry breaking in the Standard Model was experimentally ruled out, it had already been excluded on cosmological grounds. In this Brief Report, the cosmological analysis is carried out for Coleman-Weinberg models with extended Higgs sectors, which a...
متن کاملNon-perturbative Analysis of the Coleman-weinberg Phase Transition
We perform a non-perturbative study of the Coleman-Weinberg phase transition in scalar QED. Our method permits a consistent treatment of the effective potential near the origin, a region not accessible to perturbation theory. As a result, we establish reliably the first order character of the phase transition for arbitrary values of the scalar coupling. e-mail: [email protected] e-ma...
متن کاملThe Coleman-Weinberg Mechanism and First Order Phase Transitions
We study the Coleman-Weinberg phenomenon in a U(N)×U(N) symmetric scalar model in 4 dimensions. By comparing the numerical simulation results with the bare perturbation calculation in the weak bare coupling region, we demonstrate explicitly that a first order transition is induced by loop-effects. We also observed first order phase transitions in the strong coupling region. Email address: shen@...
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ژورنال
عنوان ژورنال: Physics Letters B
سال: 1996
ISSN: 0370-2693
DOI: 10.1016/0370-2693(96)00446-7