Kinematic constraints on formation of bound states of cosmic strings: Field theoretical approach

Journal Article · Fri Feb 15 04:00:00 EST 2008 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.77.041701· OSTI ID:21039076

Salmi, P ^[1]; Achucarro, A ^[1]; Copeland, E J ^[2]; Kibble, T W. B. ^[3]; Putter, R de ^[1]; Steer, D A ^[4]

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1. Lorentz Institute of Theoretical Physics, University of Leiden (Netherlands)
2. School of Physics and Astronomy, University of Nottingham, University Park, Nottingham NG7 2RD (United Kingdom)
3. Blackett Laboratory, Imperial College, London SW7 2AZ (United Kingdom)
4. APC, Universite de Paris 7, Batiment Condorcet, 10 Rue Alice Domon et Leonie Duquet, 75205 Paris (France)

Superstring theory predicts the potential formation of string networks with bound states ending in junctions. Kinematic constraints for junction formation have been derived within the Nambu-Goto thin string approximation. Here we test these constraints numerically in the framework of the Abelian-Higgs model in the Type-I regime and report on good agreement with the analytical predictions. We also demonstrate that strings can effectively pass through each other when they meet at speeds slightly above the critical velocity permitting bound-state formation. This is due to reconnection effects that are beyond the scope of the Nambu-Goto approximation.

• OSTI ID: 21039076
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 4 Vol. 77; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
APPROXIMATIONS
BOUND STATE
COSMOLOGY
CRITICAL VELOCITY
HIGGS MODEL
QUANTUM FIELD THEORY
SUPERSTRING MODELS