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Paper   IPM / Astronomy / 16738
School of Astronomy
  Title:   Dark photon dark matter from charged inflaton
  Author(s): 
1.  Hassan . Firouzjahi
2.  Mohammad Ali . Gorji
3.  Shinji . Mukohyama
4.  Borna . Salehian
  Status:   Published
  Journal: Journal of High Energy Physics (JHEP)
  Year:  2021
  Supported by:            ipm IPM
  Abstract:
We present a scenario of vector dark matter production during inflation containing a complex inflaton field which is charged under a dark gauge field and which has a symmetry breaking potential. As the inflaton field rolls towards the global minimum of the potential the dark photons become massive with a mass which can be larger than the Hubble scale during inflation. The accumulated energy of the quantum fluctuations of the produced dark photons gives the observed relic density of the dark matter for a wide range of parameters. Depending on the parameters, either the transverse modes or the longitudinal mode or their combination can generate the observed dark matter relic energy density

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