Electromagnetic radiation from a global cosmic string in an external magnetic field
A global cosmic string may couple to electromagnetism as a consequence of anomalous triangle diagrams. In an external magnetic field, the gradients of the Nambu-Goldstone boson around the string give rise to an extended polarization current. When the string oscillates, it radiates electromagnetic wa...
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1991
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v266_n3-4_p269_Harari http://hdl.handle.net/20.500.12110/paper_03702693_v266_n3-4_p269_Harari |
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paper:paper_03702693_v266_n3-4_p269_Harari |
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paper:paper_03702693_v266_n3-4_p269_Harari2023-06-08T15:36:32Z Electromagnetic radiation from a global cosmic string in an external magnetic field A global cosmic string may couple to electromagnetism as a consequence of anomalous triangle diagrams. In an external magnetic field, the gradients of the Nambu-Goldstone boson around the string give rise to an extended polarization current. When the string oscillates, it radiates electromagnetic waves. We estimate the strength of the effect for representative values of astrophysical magnetic fields. We also discuss implications for axion strings if a primordial cosmological magnetic field existed at early times. © 1991. 1991 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v266_n3-4_p269_Harari http://hdl.handle.net/20.500.12110/paper_03702693_v266_n3-4_p269_Harari |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| description |
A global cosmic string may couple to electromagnetism as a consequence of anomalous triangle diagrams. In an external magnetic field, the gradients of the Nambu-Goldstone boson around the string give rise to an extended polarization current. When the string oscillates, it radiates electromagnetic waves. We estimate the strength of the effect for representative values of astrophysical magnetic fields. We also discuss implications for axion strings if a primordial cosmological magnetic field existed at early times. © 1991. |
| title |
Electromagnetic radiation from a global cosmic string in an external magnetic field |
| spellingShingle |
Electromagnetic radiation from a global cosmic string in an external magnetic field |
| title_short |
Electromagnetic radiation from a global cosmic string in an external magnetic field |
| title_full |
Electromagnetic radiation from a global cosmic string in an external magnetic field |
| title_fullStr |
Electromagnetic radiation from a global cosmic string in an external magnetic field |
| title_full_unstemmed |
Electromagnetic radiation from a global cosmic string in an external magnetic field |
| title_sort |
electromagnetic radiation from a global cosmic string in an external magnetic field |
| publishDate |
1991 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03702693_v266_n3-4_p269_Harari http://hdl.handle.net/20.500.12110/paper_03702693_v266_n3-4_p269_Harari |
| _version_ |
1768545928617132032 |