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http://hdl.handle.net/1843/65619| Type: | Artigo de Periódico |
| Title: | A sonic boom in bubble wall friction |
| Authors: | Gláuber Carvalho Dorsch Stephan J. Huber Thomas Konstandin |
| Abstract: | We revisit the computation of bubble wall friction during a cosmological first-order phase transition, using an extended fluid Ansatz to solve the linearized Boltzmann equation. A singularity is found in the fluctuations of background species as the wall approaches the speed of sound. Using hydrodynamics, we argue that a discontinuity across the speed of sound is expected on general grounds, which manifests itself as the singularity in the solution of the linearized system. We discuss this result in comparison with alternative approaches proposed recently, which find a regular behaviour of the friction for all velocities. |
| Subject: | Transição de fase Cosmologia |
| language: | eng |
| metadata.dc.publisher.country: | Brasil |
| Publisher: | Universidade Federal de Minas Gerais |
| Publisher Initials: | UFMG |
| metadata.dc.publisher.department: | ICX - DEPARTAMENTO DE FÍSICA |
| Rights: | Acesso Restrito |
| metadata.dc.identifier.doi: | https://doi.org/10.1088/1475-7516/2022/04/010 |
| URI: | http://hdl.handle.net/1843/65619 |
| Issue Date: | 2022 |
| metadata.dc.url.externa: | https://iopscience.iop.org/article/10.1088/1475-7516/2022/04/010 |
| metadata.dc.relation.ispartof: | Journal of Cosmology and Astroparticle Physics |
| Appears in Collections: | Artigo de Periódico |
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