On the estimation of gravitational wave spectrum from cosmic domain walls
By Takashi Hiramatsu, M. Kawasaki, K. Saikawa. 2013
218 citations recorded by the source corpus.
We revisit the production of gravitational waves from unstable domain walls analyzing their spectrum by the use of field theoretic lattice simulations with grid size 10243, which is larger than the previous study. We have recognized that there exists an error in the code used in the previous study, and the correction of the error leads to the suppression of the spectrum of gravitational waves at high frequencies. The peak of the spectrum is located at the scale corresponding to the Hubble radius at the time of the decay of domain walls, and its amplitude is consistent with the naive estimation based on the quadrupole formula. Using the numerical results, the magnitude and the peak frequency of gravitational waves at the present time are estimated. It is shown that for some choices of parameters the signal of gravitational waves is strong enough to be probed in the future gravitational wave experiments.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/3c4dd5da61db747613091f187c3ead9a27849dfd
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In Astronomy and Astrophysics
In Nuclear and High Energy Physics
Citations in the corpus
- A Review of Gravitational Waves from Cosmic Domain Walls (2017, methodology): “[46] are shown in Figure 2, where Sk represents the spectrum of GWs per unit logarithmic frequency interval,”