Kinematic Constraints on Formation of Bound States of Cosmic Strings - Field Theoretical Approach

Abstract

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.

6 pages, 12 eps figures - matches the published version

References in corpus (8)

• Universal Reconnection of Non-Abelian Cosmic Strings
• Analytic Study of Small Scale Structure on Cosmic Strings
• Cosmic String Structure at the Gravitational Radiation Scale
• Constraints on string networks with junctions
• Numerical experiments with p F- and q D-strings: the formation of (p,q) bound states
• Scaling in a SU(2)/Z_3 model of cosmic superstring networks
• Effective non-intercommutation of local cosmic strings at high collision speeds
• Cosmic Necklaces from String Theory

Cited by in corpus (10)

• Cosmic string Y-junctions: a comparison between field theoretic and Nambu-Goto dynamics
• On the degeneracy between primordial tensor modes and cosmic strings in future CMB data from Planck
• Electroweak axion string and superconductivity
• Dirac Born Infeld (DBI) Cosmic Strings
• Zipping and Unzipping of Cosmic String Loops in Collision
• Kinks, extra dimensions, and gravitational waves
• Quantum current dissipation in superconducting strings and vortons
• Zipping and Unzipping in String Networks: Dynamics of Y-junctions
• Y-junction intercommutations of current carrying strings
• Dynamical simulations of colliding superconducting strings