Limits on primordial magnetic fields from direct detection experiments of gravitational wave background

  title={Limits on primordial magnetic fields from direct detection experiments of gravitational wave background},
  author={Shohei Saga and Hiroyuki Tashiro and Shuichiro Yokoyama},
  journal={Physical Review D},
Primordial magnetic fields (PMFs) can source gravitational wave background (GWB). In this paper, we investigate the possible constraints on small-scale PMF considering the ongoing and forthcoming direct detection observations of GWB. In contrast to the conventional cosmological probes, e.g., cosmic microwave background anisotropies, which are useful to investigate large-scale PMFs ($>1 {\rm Mpc}$), the direct detection experiments of GWB can explore small-scale PMFs whose scales correspond to… 

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