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PreprintarXiv licencearXiv

Gravitational Waves and Nambu-Goldstone Bosons from Infrared-Finite Cosmic Strings

  • Hajime Fukuda
  • Shuailiang Ge
  • Keisuke Harigaya
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Abstract

Skyrmion lines and semi-local strings are examples of infrared-finite cosmic strings that arise in theories with spontaneously broken global symmetries. Unlike global U(1) strings, they do not support the long-range Nambu-Goldstone boson (NGB) profile responsible for a logarithmically infrared-divergent string tension. We argue that NGB emission from their low-frequency oscillations is strongly suppressed. Consequently, their gravitational-wave signals may be comparable to those from local strings.

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Cite

BibTeXRIS
BibTeX
@misc{fukuda2026gravitational,
  title = {{Gravitational Waves and Nambu-Goldstone Bosons from Infrared-Finite Cosmic Strings}},
  author = {Hajime Fukuda and Shuailiang Ge and Keisuke Harigaya},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.08254},
  eprint = {2610.08254},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.08254},
}
RIS
TY  - UNPB
TI  - Gravitational Waves and Nambu-Goldstone Bosons from Infrared-Finite Cosmic Strings
AU  - Hajime Fukuda
AU  - Shuailiang Ge
AU  - Keisuke Harigaya
PY  - 2026
DA  - 2026/10/06
PB  - arXiv
DO  - 10.48550/arxiv.2610.08254
UR  - https://arxiv.org/abs/2610.08254
AB  - Skyrmion lines and semi-local strings are examples of infrared-finite cosmic strings that arise in theories with spontaneously broken global symmetries. Unlike global U(1) strings, they do not support the long-range Nambu-Goldstone boson (NGB) profile responsible for a logarithmically infrared-divergent string tension. We argue that NGB emission from their low-frequency oscillations is strongly suppressed. Consequently, their gravitational-wave signals may be comparable to those from local strings.
ER  -