scholarly journals Vacuum stability and symmetry breaking in left-right symmetric model

2019 ◽  
Vol 2019 (12) ◽  
Author(s):  
Garv Chauhan
Keyword(s):  
Symmetry Breaking ◽  
Symmetric Model ◽  
Vacuum Stability

scholarly journals Constraining the gauge and scalar sectors of the doublet left-right symmetric model

2020 ◽  
Vol 2020 (9) ◽  
Author(s):  
Véronique Bernard ◽  
Sébastien Descotes-Genon ◽  
Luiz Vale Silva
Keyword(s):  
Symmetry Breaking ◽  
Electroweak Symmetry Breaking ◽  
Symmetric Model ◽  
Electroweak Symmetry ◽  
Gauge Bosons ◽  
Spontaneous Breakdown ◽  
The Standard Model ◽  
Low Energies ◽  
Precision Observables ◽  
Electroweak Precision

Abstract We consider a left-right symmetric extension of the Standard Model where the spontaneous breakdown of the left-right symmetry is triggered by doublets. The electroweak ρ parameter is protected from large corrections in this Doublet Left-Right Model (DLRM), contrary to the triplet case. This allows in principle for more diverse patterns of symmetry breaking. We consider several constraints on the gauge and scalar sectors of DLRM: the unitarity of scattering processes involving gauge bosons with longitudinal polarisations, the radiative corrections to the muon ∆r parameter and the electroweak precision observables measured at the Z pole and at low energies. Combining these constraints within the frequentist CKMfitter approach, we see that the fit pushes the scale of left-right symmetry breaking up to a few TeV, while favouring an electroweak symmetry breaking triggered not only by the SU(2)L×SU(2)R bi-doublet, which is the case most commonly considered in the literature, but also by the SU(2)L doublet.

Vacuum stability and the dynamics of chiral symmetry breaking

1985 ◽  
Vol 161 (1-3) ◽  
pp. 151-154 ◽  
Author(s):  
J.C. Montero ◽  
A.A. Natale ◽  
V. Pleitez ◽  
S.F. Novaes
Keyword(s):  
Symmetry Breaking ◽  
Chiral Symmetry ◽  
Chiral Symmetry Breaking ◽  
Vacuum Stability

scholarly journals Towards completing the standard model: Vacuum stability, electroweak symmetry breaking, and dark matter

2014 ◽  
Vol 89 (1) ◽  
Author(s):  
Emidio Gabrielli ◽  
Matti Heikinheimo ◽  
Kristjan Kannike ◽  
Antonio Racioppi ◽  
Martti Raidal ◽  
...  
Keyword(s):  
Dark Matter ◽  
Standard Model ◽  
Symmetry Breaking ◽  
Electroweak Symmetry Breaking ◽  
Electroweak Symmetry ◽  
Vacuum Stability ◽  
The Standard Model

scholarly journals Radiative symmetry breaking of the minimal left-right symmetric model

2010 ◽  
Vol 82 (5) ◽  
Author(s):  
Martin Holthausen ◽  
Manfred Lindner ◽  
Michael A. Schmidt
Keyword(s):  
Symmetry Breaking ◽  
Symmetric Model

scholarly journals Vacuum structure of the ℤ2 symmetric Georgi-Machacek model

2021 ◽  
Vol 2021 (3) ◽  
Author(s):  
Duarte Azevedo ◽  
Pedro Ferreira ◽  
Heather E. Logan ◽  
Rui Santos
Keyword(s):  
Dark Matter ◽  
Symmetry Breaking ◽  
Electroweak Symmetry Breaking ◽  
The Other ◽  
Tree Level ◽  
Dark Matter Candidate ◽  
Symmetric Model ◽  
Electroweak Symmetry ◽  
Absolute Minimum ◽  
Vacuum Structure

Abstract We discuss the vacuum structure of a version of the Georgi-Machecek model with an exact ℤ2 symmetry acting on the triplet fields. Besides the usual custodial-symmetric model, with ρ = 1 at tree-level, a model with a dark matter candidate is also viable. The other phases of the model lead to electric charge breaking, a wrong pattern of electroweak symmetry breaking or to ρ ≠ 1 at tree-level. We derive conditions to have an absolute minimum in each of the two viable phases, the custodial and the dark matter phases.

scholarly journals THE HIGGS SECTOR ON TWO-SHEETED SPACE-TIME

2005 ◽  
Vol 20 (27) ◽  
pp. 6317-6326
Author(s):  
COSMIN MACESANU
Keyword(s):  
Symmetry Breaking ◽  
Predictive Power ◽  
Higgs Sector ◽  
Space Time ◽  
Symmetric Model ◽  
The Standard Model ◽  
Underlying Manifold ◽  
Higgs Fields ◽  
Gauge Connection ◽  
Natural Way

Connes's ideeas provide a framework in which the Higgs fields appear as components of a generalized gauge connection. This leads to theories with predictive power in the Higgs sector (for example, one can show that spontaneous symmetry breaking arises in a natural way). We describe a realization of this formalism where the underlying manifold is a two-sheeted space-time. We show how our particular formulation works for the case of the Standard Model and the Left-Right Symmetric Model.

scholarly journals Continuous Dissipative Phase Transitions with or without Symmetry Breaking

2021 ◽  
Author(s):  
Fabrizio Minganti ◽  
Ievgen Arkhipov ◽  
Adam Miranowicz ◽  
Franco Nori
Keyword(s):  
Phase Transitions ◽  
Symmetry Breaking ◽  
Open Quantum Systems ◽  
Quantum Systems ◽  
Second Order ◽  
Necessary Condition ◽  
Symmetric Model ◽  
Open Quantum ◽  
Modern Physics ◽  
Laser Model

Abstract The paradigm of second-order phase transitions (PTs) induced by spontaneous symmetry breaking (SSB) in thermal and quantum systems is a pillar of modern physics that has been fruitfully applied to out-of-equilibrium open quantum systems. Dissipative phase transitions (DPTs) of second order are often connected with SSB, in close analogy with well-known thermal second-order PTs in closed quantum and classical systems. That is, a second-order DPT should disappear by preventing the occurrence of SSB. Here, we prove this statement to be wrong, showing that, surprisingly, SSB is not a necessary condition for the occurrence of second-order DPTs in \textit{out-of-equilibrium open quantum systems}. We analytically prove this result using the Liouvillian theory of dissipative phase transitions, and demonstrate this anomalous transition in two exemplary models: a paradigmatic laser model, where we can arbitrarily remove SSB while retaining criticality, and a $Z_2$-symmetric model of a two-photon Kerr resonator.

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