Nambu-Goto Dynamics of Field Theory Cosmic String Loops

Abstract

We perform a detailed comparison of the dynamics of cosmic string loops obtained in cosmological field theory simulations with their expected motion according to the Nambu-Goto action. We demonstrate that these loops follow the trajectories predicted within the NG effective theory except in regions of high curvature where energy is emitted from the loop in the form of massive radiation. This energy loss continues for all the loops studied in this simulation until they self-intersect or become small enough that they annihilate and disappear well before they complete a single oscillation. We comment on the relevance of this investigation to the interpretation of the results from cosmological field theory simulations as well as their extrapolation to a cosmological context.

arXiv comment17 pages + appendix, 8 figures. Published version

References in corpus (26)

• The number of cosmic string loops
• Cosmological evolution of cosmic string loops
• Large parallel cosmic string simulations: New results on loop production
• Stochastic gravitational wave background from smoothed cosmic string loops
• CMB power spectrum contribution from cosmic strings using field-evolution simulations of the Abelian Higgs model
• Fractal Properties and Small-scale Structure of Cosmic String Networks
• Numerical simulations of string networks in the Abelian-Higgs model
• Scaling of cosmic string loops
• On the Evolution of Abelian-Higgs String Networks
• Cosmic string loops in the expanding universe
• Abelian Higgs Cosmic Strings: Small Scale Structure and Loops
• Scaling from gauge and scalar radiation in Abelian Higgs string networks
• Decay of Cosmic String Loops Due to Particle Radiation
• Field theory simulation of Abelian-Higgs cosmic string cusps
• Cosmic string scaling in flat space
• phi^4 Kinks - Gradient Flow and Dynamics
• Radiation from cosmic string standing waves
• Cosmic String Loop Collapse in Full General Relativity
• Loop decay in Abelian-Higgs string networks
• Bound States and Instabilities of Vortices
• Exciting the Domain Wall Soliton
• The dynamics of Domain Wall Strings
• A note on BPS vortex bound states
• High resolution calibration of the cosmic strings velocity dependent one-scale model
• Peristaltic modes of single vortex in the Abelian Higgs model
• Parametric Resonances in Axionic Cosmic Strings

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