Quintessential enhancement of dark matter abundance

  title={Quintessential enhancement of dark matter abundance},
  author={Francesca Rosati},
  journal={Physics Letters B},
  • F. Rosati
  • Published 18 February 2003
  • Physics
  • Physics Letters B
Abstract The presence of a dynamical scalar field in the early universe could significantly affect the ‘freeze-out’ time of particle species. In particular, it was recently shown that an enhancement of the relic abundance of neutralinos can be produced in this way. We examine under which conditions this primordial scalar field could be identified with the Quintessence scalar and find, through concrete examples, that modifications to the standard paradigm are necessary. We discuss two possible… 

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