Semilocal and Electroweak Strings

Abstract

We review a class of non-topological defects in the standard electroweak model, and their implications. Starting with the semilocal string, which provides a counterexample to many well known properties of topological vortices, we discuss electroweak strings and their stability with and without external influences such as magnetic fields. Other known properties of electroweak strings and monopoles are described in some detail and their potential relevance to future particle accelerator experiments and to baryon number violating processes is considered. We also review recent progress on the cosmology of electroweak defects and the connection with superfluid helium, where some of the effects discussed here could possibly be tested.

86 pages; submitted to Phys. Rep

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• Some comments about emission channels of non abelian vortices
• Cosmological Symmetry Breaking and Generation of Electromagnetic Field
• Vacuum Polarization Energy of the Kinks in the Sinh-Deformed Models
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• Cosmological Evolution of Semilocal String Networks
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• Cosmic Strings Stabilized by Fermion Fluctuations
• NS Three-form Flux Deformation for the Critical Non-Abelian Vortex String
• Semilocal Fractional Instantons
• Effective constraint potential in lattice Weinberg - Salam model
• Embedded Monopoles
• Searching for Novel Objects in the Electroweak Theory
• Vacuum Energy of Quantum Fields in Classical Background Configurations
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• Properties of the electroweak vacuum versus the QCD-vacuum in strong magnetic fields
• Emission of Nambu-Goldstone bosons from the semilocal string network
• Critical Non-Abelian Vortex String and 2D N=2 Black Hole
• Calibrating Analytical Models for Semilocal Strings
• Supersymmetrising the GSY Soliton
• Bosonic (meta)stabilization of cosmic string loops
• Mass formulae and staticity condition for dark matter charged black holes
• Zero temperature lattice Weinberg - Salam model for the values of the cutoff $\Lambda \sim 1$ TeV
• Examples for BPS solitons destabilized by quantum effects
• Search for NS 3-form Flux Induced Vacua for the Critical Non-Abelian Vortex String
• Accidental symmetries in the scalar potential of the Standard Model extended with two Higgs triplets
• Heterotically Deformed Sigma Models on the World Sheet of Semilocal Strings in SQED
• The non-topological $Z^{\prime }$ string in the 331 model and its classical stability
• Classification of Magnetic Vortices by Angular Momentum Conservation
• Solitons on Singularities
• Quantizing a solitonic string
• Superconducting Semilocal Strings
• PhD Thesis: String theory in the early universe
• SO and USp (Hyper)Kahler Quotients and Lumps