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Electromagnetic fields in a thermal background
The one-loop effective action for a slowly varying electromagnetic field is computed at finite temperature and density using a real-time formalism. Some earlier errors in the literature are corrected. The effective coupling constant, defined from a purely electric weak-field expansion, behaves at hi...
| Autores principales: | , |
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| Lenguaje: | eng |
| Publicado: |
1994
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1016/0370-2693(95)00124-4 https://dx.doi.org/10.1016/0370-2693(96)00341-3 http://cds.cern.ch/record/261955 |
| _version_ | 1780886305742258176 |
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| author | Elmfors, Per Skagerstam, Bo-Sture |
| author_facet | Elmfors, Per Skagerstam, Bo-Sture |
| author_sort | Elmfors, Per |
| collection | CERN |
| description | The one-loop effective action for a slowly varying electromagnetic field is computed at finite temperature and density using a real-time formalism. Some earlier errors in the literature are corrected. The effective coupling constant, defined from a purely electric weak-field expansion, behaves at high temperature very differently from the case of a magnetic field, and does not satisfy the renormalization group equation. No thermal corrections to pair production are found at the one-loop level in this formalism. |
| id | cern-261955 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 1994 |
| record_format | invenio |
| spelling | cern-2619552023-03-14T20:45:04Zdoi:10.1016/0370-2693(95)00124-4doi:10.1016/0370-2693(96)00341-3http://cds.cern.ch/record/261955engElmfors, PerSkagerstam, Bo-StureElectromagnetic fields in a thermal backgroundGeneral Theoretical PhysicsThe one-loop effective action for a slowly varying electromagnetic field is computed at finite temperature and density using a real-time formalism. Some earlier errors in the literature are corrected. The effective coupling constant, defined from a purely electric weak-field expansion, behaves at high temperature very differently from the case of a magnetic field, and does not satisfy the renormalization group equation. No thermal corrections to pair production are found at the one-loop level in this formalism.The one--loop effective action for a slowly varying electromagnetic field is computed at finite temperature and density using a real-time formalism. Some earlier errors in the literature are corrected. The effective coupling constant, defined from a purely electric weak--field expansion, behaves at high temperature very differently from the case of a magnetic field, and does not satisfy the renormalization group equation. No thermal corrections to pair production are found at the one--loop level in this formalism.The one-loop effective action for a slowly varying electromagnetic field is computed at finite temperature and density using a real-time formalism. We discuss the gauge invariance of the result. Corrections to the Debye mass from an electric field are computed at high temperature and high density. The effective coupling constant, defined from a purely electric weak-field expansion, behaves at high temperature very differently from the case of a magnetic field, and does not satisfy the renormalization group equation. The issue of pair production in the real-time formalism is discussed and also its relevance for heavy-ion collisions.hep-th/9404106NORDITA-94-18-Poai:cds.cern.ch:2619551994 |
| spellingShingle | General Theoretical Physics Elmfors, Per Skagerstam, Bo-Sture Electromagnetic fields in a thermal background |
| title | Electromagnetic fields in a thermal background |
| title_full | Electromagnetic fields in a thermal background |
| title_fullStr | Electromagnetic fields in a thermal background |
| title_full_unstemmed | Electromagnetic fields in a thermal background |
| title_short | Electromagnetic fields in a thermal background |
| title_sort | electromagnetic fields in a thermal background |
| topic | General Theoretical Physics |
| url | https://dx.doi.org/10.1016/0370-2693(95)00124-4 https://dx.doi.org/10.1016/0370-2693(96)00341-3 http://cds.cern.ch/record/261955 |
| work_keys_str_mv | AT elmforsper electromagneticfieldsinathermalbackground AT skagerstambosture electromagneticfieldsinathermalbackground |