Gravitational wave echo of relaxion trapping

  title={Gravitational wave echo of relaxion trapping},
  author={Abhishek Banerjee and Eric Madge and Gilad Perez and Wolfram Ratzinger and Pedro Schwaller},
  journal={Physical Review D},
To solve the hierarchy problem, the relaxion must remain trapped in the correct minimum, even if the electroweak symmetry is restored after reheating. In this scenario, the relaxion starts rolling again until the backreaction potential, with its set of local minima, reappears. Depending on the time of barrier reappearance, Hubble friction alone may be insufficient to retrap the relaxion in a large portion of the parameter space. Thus, an additional source of friction is required, which might be… Expand

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