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Gravitational back-reaction near cosmic string kinks and cusps

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arxiv 1808.08254 v2 pith:DMXA727D submitted 2018-08-24 gr-qc astro-ph.CO

Jose J. Blanco-Pillado , Ken D. Olum , Jeremy M. Wachter This is my paper · ORCID
classification gr-qcastro-ph.CO
keywords kinknearcuspcuspsdistancedivergeseffectacts
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We find the leading-order effect of gravitational back-reaction on cosmic strings for points near kinks and cusps. Near a kink, the effect diverges as the inverse cube root of the distance to the kink, and acts in a direction transverse to the worldsheet. Over time the kink is rounded off, but only regions fairly close to the kink are significantly affected. Near cusps, the effect diverges inverse linearly with the distance to the cusp, and acts against the direction of the cusp motion. This results in a fractional loss of string energy that diverges logarithmically with the distance of closest approach to the cusp.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Metastable cosmic strings are broken at the start

    hep-ph 2026-01 conditional novelty 7.0 of 10

    Metastable cosmic-string networks are typically broken within a Hubble time of formation by finite-temperature effects or by pre-existing monopoles, so matching NANOGrav requires m_M^2/μ ≳ 10^3.

  2. Probing the gravitational wave background from cosmic strings with LISA

    astro-ph.CO 2019-09 conditional novelty 6.0 of 10

    LISA is projected to probe cosmic string tensions G mu down to about 1e-17 and to measure spectral features from early-universe physics.

  3. Backreaction on an infinite helical cosmic string

    astro-ph.CO 2019-08 accept novelty 6.0 of 10

    For a small-amplitude helical breather cosmic string, gravitational backreaction produces energy loss matching Sakellariadou's power and a rotation of the generators that advances the oscillation phase.

  4. Waveform Modelling for the Laser Interferometer Space Antenna

    gr-qc 2023-11 unverdicted novelty 2.0 of 10

    A review of existing waveform models for LISA sources and the challenges that must still be overcome.

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