Cosmic string collision in cosmological backgrounds

Journal Article · Tue Jun 15 00:00:00 EDT 2010 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.123506· OSTI ID:21408041

Firouzjahi, Hassan ^[1]; Khoeini-Moghaddam, Salomeh ^[1]; Khosravi, Shahram ^[2]

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1. School of Physics, Institute for Research in Fundamental Sciences (IPM), P.O. Box 19395-5531, Tehran (Iran, Islamic Republic of)
2. Department of Physics, Faculty of Science, Tarbiat Mo'allem University, Tehran (Iran, Islamic Republic of)

The collisions of cosmic string loops and the dynamics of junction formations in expanding backgrounds are studied. The key parameter controlling the dynamics of junction formation, the cosmic strings zipping and unzipping, is the relative size of the loops compared to the Hubble radius at the time of collision. We study analytically and numerically these processes for large superhorizon size loops, for small subhorizon size loops as well as for loops with the radii comparable to the Hubble radius at the time of collision.

• OSTI ID: 21408041
• Journal Information: Physical Review. D, Particles Fields, Vol. 81, Issue 12; Other Information: DOI: 10.1103/PhysRevD.81.123506; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTROPHYSICS
COSMOLOGY AND ASTRONOMY
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COLLISIONS
COSMOLOGICAL MODELS
COSMOLOGY
HUBBLE EFFECT
SPACE
STRING MODELS
COMPOSITE MODELS
EXTENDED PARTICLE MODEL
MATHEMATICAL MODELS
PARTICLE MODELS
QUARK MODEL