Maximum force in modified gravity theories

@article{Barrow2020MaximumFI,
  title={Maximum force in modified gravity theories},
  author={John D. Barrow and Naresh Dadhich},
  journal={Physical Review D},
  year={2020},
  volume={102}
}
We investigate the existence and nature of classical maximum force bound between two black holes with touching horizons. Besides general relativity, the maximum force bound is independent of black hole masses only in Moffat's theory, Brans Dicke theory (which is the same as Einstein's for vacuum) and the higher dimensional generalization of Einstein's theory, pure Lovelock gravity which is characterised by having single $n$th order term in Lovelock polynomial without sum over lower orders in… 
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