Semilocal cosmic strings

Journal Article · Fri Nov 15 00:00:00 EST 1991 · Physical Review, D (Particles Fields); (United States)

DOI:https://doi.org/10.1103/PhysRevD.44.3067· OSTI ID:6159058

Vachaspati, T ^[1]; Achucarro, A ^[2]

---

1. Tufts Institute of Cosmology, Department of Physics and Astronomy, Tufts University, Medford, Massachusetts (USA)
2. Department of Mathematics, Tufts University, Medford, Massachusetts (USA)

We show that the presence of global symmetries in a Lagrangian can lead to U(1) flux-tube solutions even when the vacuum manifold is simply connected. We provide a model in which these flux tubes, called semilocal'' strings, occur and explicitly prove the existence of stable string solutions by Bogomol'nyi's method. The formation of semilocal strings in the early Universe and the evolution of the network is discussed. We also show that semilocal magnetic monopoles cannot exist.

• OSTI ID: 6159058
• Journal Information: Physical Review, D (Particles Fields); (United States), Vol. 44:10; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
UNIVERSE
STRING MODELS
COSMOLOGY
FIELD THEORIES
GAUGE INVARIANCE
HIGGS MODEL
LAGRANGIAN FUNCTION
MAGNETIC MONOPOLES
PHASE TRANSFORMATIONS
SCALAR FIELDS
SU-2 GROUPS
SYMMETRY BREAKING
U-1 GROUPS
VACUUM STATES
WEINBERG-SALAM GAUGE MODEL
COMPOSITE MODELS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FUNCTIONS
INVARIANCE PRINCIPLES
LIE GROUPS
MATHEMATICAL MODELS
MONOPOLES
PARTICLE MODELS
POSTULATED PARTICLES
QUARK MODEL
SU GROUPS
SYMMETRY GROUPS
U GROUPS
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
662110* - General Theory of Particles & Fields- Theory of Fields & Strings- (1992-)
661300 - Other Aspects of Physical Science- (1992-)