Kavli Affiliate: Misao Sasaki
| First 5 Authors: Marcos M. Flores, Alexander Kusenko, Misao Sasaki, ,
| Summary:
The existence of scalar fields can be probed by observations of stochastic
gravitational waves. Scalar fields mediate attractive forces, usually stronger
than gravity, on the length scales shorter than their Compton wavelengths,
which can be non-negligible in the early universe, when the horizon size is
small. These attractive forces exhibit an instability similar to the
gravitational instability, only stronger. They can, therefore, lead to the
growth of structures in some species. We identify a gravitational waves
signature of such processes and show that it can be detected by the future
gravitational waves experiments.
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