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- W2950672675 abstract "We have analyzed a $U(1)$ model which is broken explicitly to a $Z_2$ model. The model results in generating two stable domain walls, in contrast with the more common $N_{DW}=1$ version which is prevalently used to explain axion invisibility for $U_{PQ}(1)$ model. We have been meticulous to take into account any possible relation with previous studies, even if they apparently belong to different lines of research. Then we have scrutinized the domain wall properties of the model,proposing a rigorous approximate solution which fully satisfies boundary conditions and the static virial theorem simultaneously. Invoking the mentioned approximation, we have been able to obtain an analytical insight about the effect of parameters on the domain wall features, particularly on their surface energy density which is of great importance in cosmological studies when one tries to avoid domain wall energy domination problem. Next, we have mainly focused on the likely inflationary scenarios of the model, including saddle point inflation, again insisting on analytical discussions to be able to follow the role of parameters. We have tried to categorize any inflationary scenario into the known categories to take advantage of the previous detailed studies under the inflationary topic over the decades. We have concluded that any successful inflationary scenario requires large fields definition for the model. Calculations are mainly done analytically and numerical results are used as supportive material." @default.
- W2950672675 created "2019-06-27" @default.
- W2950672675 creator A5035403322 @default.
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- W2950672675 date "2015-11-18" @default.
- W2950672675 modified "2023-09-24" @default.
- W2950672675 title "$Z_2$ Massive Axions, Domain Walls and Inflation" @default.
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- W2950672675 doi "https://doi.org/10.48550/arxiv.1511.05885" @default.
- W2950672675 hasPublicationYear "2015" @default.
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