RADIATION OF NAMBU-GOLDSTONE BOSONS FROM INFINITELY LONG COSMIC STRINGS

被引:16
作者
SAKELLARIADOU, M
机构
[1] Research Group in General Relativity, Université Libre de Bruxelles, Campus Plaine, 1050 Brussels
来源
PHYSICAL REVIEW D | 1991年 / 44卷 / 12期
关键词
D O I
10.1103/PhysRevD.44.3767
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
Nambu-Goldstone-boson radiation from an infinitely long string with a helicoidal standing wave is studied in the weak-field approximation. The radiation power and the spectrum are calculated. In the case of a single-small-amplitude helicoidal standing wave, the radiated power goes as epsilon-10, indicating that the Nambu-Goldstone-boson radiation mechanism is efficient only for large-amplitude waves. A simple analysis of the radiation due to a wide spectrum of small-amplitude waves indicate that in general the emitted power goes as epsilon-4.
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页码:3767 / 3773
页数:7
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