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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_03702693_v266_n3-4_p269_Harari |
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todo:paper_03702693_v266_n3-4_p269_Harari2023-10-03T15:28:44Z Electromagnetic radiation from a global cosmic string in an external magnetic field Harari, D.D. Mazzitelli, F.D. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03702693_v266_n3-4_p269_Harari |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
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R-134 |
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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. |
| format |
JOUR |
| author |
Harari, D.D. Mazzitelli, F.D. |
| spellingShingle |
Harari, D.D. Mazzitelli, F.D. Electromagnetic radiation from a global cosmic string in an external magnetic field |
| author_facet |
Harari, D.D. Mazzitelli, F.D. |
| author_sort |
Harari, D.D. |
| title |
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 |
| url |
http://hdl.handle.net/20.500.12110/paper_03702693_v266_n3-4_p269_Harari |
| work_keys_str_mv |
AT hararidd electromagneticradiationfromaglobalcosmicstringinanexternalmagneticfield AT mazzitellifd electromagneticradiationfromaglobalcosmicstringinanexternalmagneticfield |
| _version_ |
1782023976995782656 |