Journal
PHYSICAL REVIEW D
Volume 94, Issue 9, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.94.096005
Keywords
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Funding
- FCT, Portugal [PTDC/FIS/111725/2009]
- STFC studentship
- FCT Research Professorship - FCT/MCTES (Portugal) [IF/00064/2012]
- BIS National E-infrastructure Capital Grant [ST/J005673/1]
- STFC Grants [ST/H008586/1, ST/K00333X/1]
- POPH/FSE (EC)
- [UID/FIS/04434/2013]
- STFC [ST/J005673/1, ST/K00333X/1, ST/M00418X/1, ST/M007065/1, ST/H008586/1, ST/L000636/1] Funding Source: UKRI
- Science and Technology Facilities Council [ST/L000636/1, ST/J005673/1, ST/M00418X/1, ST/H008586/1, ST/M007065/1, ST/K00333X/1] Funding Source: researchfish
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We make use of the formalism described in a previous paper [Martins et al., Phys. Rev. D 90, 043518 (2014)] to address general features of wiggly cosmic string evolution. In particular, we highlight the important role played by poorly understood energy loss mechanisms and propose a simple Ansatz which tackles this problem in the context of an extended velocity-dependent one-scale model. We find a general procedure to determine all the scaling solutions admitted by a specific string model and study their stability, enabling a detailed comparison with future numerical simulations. A simpler comparison with previous Goto-Nambu simulations supports earlier evidence that scaling is easier to achieve in the matter era than in the radiation era. In addition, we also find that the requirement that a scaling regime be stable seems to notably constrain the allowed range of energy loss parameters.
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