Particle creation in the context of the emergent universe

Hamil B., Merad M., Birkandan T.

REVISTA MEXICANA DE FISICA, vol.67, no.2, pp.219-225, 2021 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 67 Issue: 2
  • Publication Date: 2021
  • Doi Number: 10.31349/revmexfis.67.219
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, zbMATH, DIALNET
  • Page Numbers: pp.219-225
  • Istanbul Technical University Affiliated: Yes


We study the mechanism of particle creation in the context of the emergent universe (EU) scenario which is privileged by certain important characteristics such as the absence of time-like singularity. EU asymptotically coincides with an Einstein static model in the infinite past and it approaches to a de Sitter expansion phase at late times. By introducing the conformal time, we obtain the solution of the Klein-Gordon equation and by applying the "in" and "out" states method, the total number of produced particles and the total energy associated with them are determined.