Stability of superconducting strings coupled to cosmic strings
arXiv:1110.5497 · doi:10.1103/PhysRevD.85.023518
Abstract
We study the stability of superconducting strings in a U(1)_{local} x U(1)_{global} model coupled via a gauge field interaction term to U(1) Abelian-Higgs strings. The effect of the interaction on current stability is numerically investigated by varying the relevant parameters within the physical limits of our model. We find that the propagation speed of transverse (resp. longitudinal) perturbations increases (decreases) with increasing binding between the superconducting and Abelian-Higgs string. Moreover, we observe that for small enough width of the flux tube of the superconducting string and/or large enough interaction between the superconducting and the Abelian-Higgs string superconducting strings cannot carry space-like, i.e. magnetic currents. Our model can be seen as a field theoretical realization of bound states of p F-strings and q superconducting D-strings and has important implications to vorton formation during the evolution of networks of such strings.
18 pages including 17 figures: v2: figures changed
References in corpus (22)
- Observation of an anomalous positron abundance in the cosmic radiation
- A Theory of Dark Matter
- Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01
- LHC Signals for a SuperUnified Theory of Dark Matter
- Extended Anomalous Foreground Emission in the WMAP 3-Year Data
- Gamma-ray continuum emission from the inner Galactic region as observed with INTEGRAL/SPI
- Gamma-ray and Radio Constraints of High Positron Rate Dark Matter Models Annihilating into New Light Particles
- Evolution of cosmic superstring networks: a numerical simulation
- Numerical experiments with p F- and q D-strings: the formation of (p,q) bound states
- On the Collision of Cosmic Superstrings
- Scaling in a SU(2)/Z_3 model of cosmic superstring networks
- Kinematic Constraints on Formation of Bound States of Cosmic Strings - Field Theoretical Approach
- Cosmic string Y-junctions: a comparison between field theoretic and Nambu-Goto dynamics
- Dark Strings
- Cosmic strings interacting with dark strings
- The effect of dark strings on semilocal strings
- Energy Radiation by Cosmic Superstrings in Brane Inflation
- The logarithmic equation of state for superconducting cosmic strings
- Coupled currents in cosmic strings
- Gravitating (field theoretical) cosmic (p,q)-superstrings
- Cosmic D-Strings and Vortons in Supergravity
- Statistical mechanics of strings with Y-junctions