• Martin Bauer
  • Tilman Plehn
Part of the Lecture Notes in Physics book series (LNP, volume 959)


After we understand the relic photons in the Universe, we can focus on a set of different other relics, including the first dark matter candidates. For those the main question is to explain the observed value of Ωχh2 ≈ 0.12. Before we will eventually turn to thermal production of massive dark matter particles, we can use a similar approach as for the photons for relic neutrinos. Furthermore, we will look at ways to produce dark matter during the thermal history of the Universe, without relying on the thermal bath.


  1. 1.
    Tanabashi, M., et al.: [Particle data group], Review of particle physics. Phys. Rev. D 98(3), 030001 (2018)Google Scholar
  2. 2.
    Kolb, E.W., Turner, M.S.: The early Universe. Front. Phys. 69, 1 (1990)MathSciNetzbMATHADSGoogle Scholar

Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Martin Bauer
    • 1
  • Tilman Plehn
    • 1
  1. 1.Institut für Theoretische PhysikUniversität HeidelbergHeidelbergGermany

Personalised recommendations