Stability of two-doublet electroweak strings

Journal Article · Wed Dec 15 04:00:00 EST 1993 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.48.5818· OSTI ID:5805291

Earnshaw, M A; James, M ^[1]

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1. Department of Applied Mathematics and Theoretical Physics, Silver Street, Cambridge, CB3 9EW (United Kingdom)

Vortex solutions in the two-Higgs-doublet electroweak model are constructed, and their stability to small perturbations is studied. The most general perturbation is decomposed into angular momentum modes, the least stable mode is identified, and the linearized energy change of the vortex under this perturbation is calculated numerically for various choices of parameters, thus determining whether or not the string is stable. It is found that, for realistic values of the Higgs boson mass and Weinberg angle, the string is unstable.

• OSTI ID: 5805291
• Journal Information: Physical Review, D (Particles Fields); (United States), Journal Name: Physical Review, D (Particles Fields); (United States) Vol. 48:12; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

662110* -- General Theory of Particles & Fields-- Theory of Fields & Strings-- (1992-)
662210 -- Specific Theories & Interaction Models
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
COMPOSITE MODELS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FLUID FLOW
HIGGS BOSONS
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
PERTURBATION THEORY
POSTULATED PARTICLES
Pa
Particle Systematics-- Unified Theories & Models-- (1992-)
QUARK MODEL
STABILITY
STRING MODELS
SU GROUPS
SU-2 GROUPS
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
VORTEX FLOW
WEINBERG ANGLE