PhysRevD.68.103506.pdf (307.13 kB)
Scaling in Numerical Simulations of Domain Walls
journal contribution
posted on 2023-06-08, 04:54 authored by Theodore Garagounis, Mark HindmarshMark HindmarshWe study the evolution of domain wall networks appearing after phase transitions in the early Universe. They exhibit interesting dynamical scaling behavior which is not yet well understood, and are also simple models for the more phenomenologically acceptable string networks. We have run numerical simulations in two- and three-dimensional lattices of sizes up to 4096^3. The theoretically predicted scaling solution for the wall area density A1/t is supported by the simulation results, while no evidence of a logarithmic correction reported in previous studies could be found. The energy loss mechanism appears to be direct radiation, rather than the formation and collapse of closed loops or spheres. We discuss the implications for the evolution of string networks.
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Physical Review DExternal DOI
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10Volume
68Page range
103506Department affiliated with
- Physics and Astronomy Publications
Notes
Supervisor of research student Garagounis. We provided strong numerical evidence that domain walls (2-dimensional extended objects) have the important property of scaling or self-similarity, and lose energy directly, strengthening similar claims for 1-dimensional objects or cosmic strings.Full text available
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Legacy Posted Date
2012-02-06First Open Access (FOA) Date
2016-03-22First Compliant Deposit (FCD) Date
2016-11-10Usage metrics
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