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Moduli decay in the hot early Universe
We consider moduli fields interacting with thermalized relativistic matter. We determine the temperature dependence of their damping rate and find it is dominated by thermal effects in the high temperature regime, i.e. for temperatures larger than their mass. For a simple scalar model the damping ra...
| Autor principal: | |
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| Lenguaje: | eng |
| Publicado: |
2006
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| Acceso en línea: | https://dx.doi.org/10.1088/1475-7516/2006/06/027 http://cds.cern.ch/record/946313 |
| _version_ | 1780909901161168896 |
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| author | Bodeker, Dietrich |
| author_facet | Bodeker, Dietrich |
| author_sort | Bodeker, Dietrich |
| collection | CERN |
| description | We consider moduli fields interacting with thermalized relativistic matter. We determine the temperature dependence of their damping rate and find it is dominated by thermal effects in the high temperature regime, i.e. for temperatures larger than their mass. For a simple scalar model the damping rate is expressed through the known matter bulk viscosity. The high temperature damping rate is always smaller than the Hubble rate, so that thermal effects are not sufficient for solving the cosmological moduli problem. |
| id | cern-946313 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2006 |
| record_format | invenio |
| spelling | cern-9463132019-09-30T06:29:59Zdoi:10.1088/1475-7516/2006/06/027http://cds.cern.ch/record/946313engBodeker, DietrichModuli decay in the hot early UniverseParticle Physics - PhenomenologyWe consider moduli fields interacting with thermalized relativistic matter. We determine the temperature dependence of their damping rate and find it is dominated by thermal effects in the high temperature regime, i.e. for temperatures larger than their mass. For a simple scalar model the damping rate is expressed through the known matter bulk viscosity. The high temperature damping rate is always smaller than the Hubble rate, so that thermal effects are not sufficient for solving the cosmological moduli problem.hep-ph/0605030BI-TP-2006-12CERN-PH-TH-2006-077oai:cds.cern.ch:9463132006-05-02 |
| spellingShingle | Particle Physics - Phenomenology Bodeker, Dietrich Moduli decay in the hot early Universe |
| title | Moduli decay in the hot early Universe |
| title_full | Moduli decay in the hot early Universe |
| title_fullStr | Moduli decay in the hot early Universe |
| title_full_unstemmed | Moduli decay in the hot early Universe |
| title_short | Moduli decay in the hot early Universe |
| title_sort | moduli decay in the hot early universe |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1088/1475-7516/2006/06/027 http://cds.cern.ch/record/946313 |
| work_keys_str_mv | AT bodekerdietrich modulidecayinthehotearlyuniverse |