Journal ArticleDOI
Perturbative Calculations of Symmetry Breaking
TLDR
In this article, the one-loop contributions to fermion and pseudo-Goldstone masses are calculated for the general class of renormalizable guage theories, and it is shown explicitly that when the masses are subject to any type of zeroth-order symmetry.Abstract:
The one-loop contributions to fermion and pseudo-Goldstone masses are calculated for the general class of renormalizable guage theories. It is shown explicitly that when the masses are subject to any type of zeroth-order symmetry. relation for all values of the parameters in the Lagrangian, the divergences in the one-loop corrections to these symmetry relations cancel. The finite parts of these corrections are evaluated and discussed. Other topics considered include the connection of this work with that of Coleman and E. Weinberg, the constraints obeyed by scalar coupling constants, and the path-integral derivation of the Feynman rules for general renormalizable gauge theories.read more
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Journal ArticleDOI
Radiative corrections to the masses of supersymmetric Higgs bosons
TL;DR: In this article, the lightest neutral Higgs boson in the minimal supersymmetric extension of the standard model has a tree-level mass less than that of the Z 0.
Journal ArticleDOI
Gauge and Global Symmetries at High Temperature
TL;DR: In this paper, it was shown that a symmetry which is unbroken at low temperature can be broken by raising the temperature above a critical value, which is known as critical temperature.
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Proton stability in grand unified theories, in strings and in branes
Pran Nath,Pavel Fileviez Pérez +1 more
TL;DR: A broad overview of the current status of proton stability in unified models of particle interactions is given which includes non-supersymmetric unification, SUSY and SUGRA unified models, unification based on extra dimensions, and string-M-theory models as mentioned in this paper.
Journal ArticleDOI
Finite Temperature Quantum Field Theory in Minkowski Space
TL;DR: In this paper, the authors formulate finite-temperature quantum field theories in Minkowski space (real time) using Feynman path integrals and show that at non-zero temperature a new field arises which plays the role of a ghost field and is necessary for unambiguous Feynmann rules.
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Baryon Washout, Electroweak Phase Transition, and Perturbation Theory
TL;DR: In this article, a gauge-independent criterion for baryon number preservation was proposed for electroweak baryogenesis, which is not gauge independent due to the failure of consistently implementing the Nielsen identities order-by-order in perturbation theory.