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30
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“School of Astronomy”

Paper   IPM / Astronomy / 15708
   School of Astronomy
  Title: Non-minimal Particle Creation from Asymptotic-de Sitter Inflation
  Author(s):
1 . E. . Yusofi
2 . M. . Mohsenzadeh
  Status: Published
  Journal: Springer
  Vol.: 57
  Year: 2018
  Pages: 1622�??1630
  Supported by:           ipm IPM
  Abstract:
A general form of quasi-de Sitter(dS) modes is used to study the creation of particle during the inflation. Actually, by considering the general form of inflaton field equation as a function of the Hankel function index and by using the Planck 2015 constraint on spectral index, we obtain the possible new constraints for the values of coupling constant in the era with asymptotic-dS space-time. Then, we explicitly calculate the general form of expectation value of the created particles in terms of the Hankel function index and the conformal time. The correction terms in the number of created particles are very tiny in the early time but can have the significant effects in the later universe. Our result is general and at the early time limit confirm the conventional special results for the Minkowski and dS background.

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