Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2002-01-11
Phys.Rev. D65 (2002) 083522
Physics
High Energy Physics
High Energy Physics - Phenomenology
11 pages, RevTeX 4 format, 8 figures, submitted to PRD
Scientific paper
10.1103/PhysRevD.65.083522
The dynamical evolution of superconducting cosmic string loops with specific equations of state describing timelike and spacelike currents is studied numerically. This analysis extends previous work in two directions: first it shows results coming from a fully three dimensional simulation (as opposed to the two dimensional case already studied), and it now includes fermionic as well as bosonic currents. We confirm that in the case of bosonic currents, shocks are formed in the magnetic regime and kinks in the electric regime. For a loop endowed with a fermionic current with zero-mode carriers, we show that only kinks form along the string worldsheet, therefore making these loops slightly more stable against charge carrier radiation, the likely outcome of either shocks or kinks. All these combined effects tend to reduce the number density of stable loops and contribute to ease the vorton excess problem. As a bonus, these effects also may provide new ways of producing high energy cosmic rays.
Cordero-Cid Adriana
Martin Xavier
Peter Patrick
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