Stretching and Kibble scaling regimes for Hubble-damped defect networks

Abstract

The cosmological evolution of topological defect networks can broadly be divided into two stages. At early times they are friction-dominated due to particle scattering and therefore non-relativistic, and may either be conformally stretched or evolve in the Kibble regime. At late times they are relativistic and evolve in the well known linear scaling regime. In this work we show that a sufficiently large Hubble damping (that is a sufficiently fast expansion rate) leads to a linear scaling regime where the network is non-relativistic. This is therefore another realization of a Kibble scaling regime, and also has a conformal stretching regime counterpart which we characterize for the first time. We describe these regimes using analytic arguments in the context of the velocity-dependent one-scale model, and we confirm them using high-resolution $4096^3$ field theory simulations of domain wall networks. We also use these simulations to improve the calibration of this analytic model for the case of domain walls.

arXiv commentWe respectfully dedicate this work to Tom Kibble

References in corpus (17)

• Cosmic strings
• Cosmic String Production Towards the End of Brane Inflation
• Cosmic F- and D-strings
• How generic is cosmic string formation in SUSY GUTs
• Quantitative String Evolution
• Extending the Velocity-dependent One-scale String Evolution Model
• Releasing scalar fields: cosmological simulations of scalar-tensor theories for gravity beyond the static approximation
• Domain Walls as Dark Energy
• One-scale Model for Domain Wall Network Evolution
• Extending the velocity-dependent one-scale model for domain walls
• Scaling Properties of Domain Wall Networks
• Contribution of domain wall networks to the CMB power spectrum
• Are Domain Walls ruled out ?
• Accurate Calibration of the Velocity-dependent One-scale Model for Domain Walls
• Cosmic Microwave Background anisotropies generated by domain wall networks
• Domain walls coupled to matter: the symmetron example
• Constraints on the solid dark universe model

Cited by in corpus (12)

• The status of varying constants: a review of the physics, searches and implications
• Scaling from gauge and scalar radiation in Abelian Higgs string networks
• Extending and Calibrating the Velocity dependent One-Scale model for Cosmic Strings with One Thousand Field Theory Simulations
• Friction on ALP domain walls and gravitational waves
• Revisiting evolution of domain walls and their gravitational radiation with CosmoLattice
• Effects of biases in domain wall network evolution. II. Quantitative analysis
• Defect Line Coarsening and Refinement in Active Nematics
• Domain wall annihilation -- a QFT perspective
• High resolution calibration of the cosmic strings velocity dependent one-scale model
• Abelian-Higgs Cosmic String Evolution with CUDA
• General purpose graphics-processing-unit implementation of cosmological domain wall network evolution
• Gravitational Wave Mountains: current-carrying domain walls