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A numerical study of pseudoscalar inflation | | Shu-Lin Cheng
; Wolung Lee
; Kin-Wang Ng
; | | Date: |
2 Aug 2015 | | Abstract: | A numerical study of a pseudoscalar inflation having an axion-photon-like
coupling is performed by solving numerically the coupled differential equations
of motion for inflaton and photon mode functions from the onset of inflation to
the end of reheating. The backreaction due to particle production is also
included self-consistently. We find that this particular inflation model
realizes the idea of a warm inflation in which a steady thermal bath is
established by the particle production. In most cases this thermal bath exceeds
the amount of radiation released in the reheating process. In the strong
coupling regime, the transition from the inflationary to the
radiation-dominated phase does not involve either a preheating or reheating
process. In addition, energy density peaks produced near the end of inflation
may lead to the formation of primordial black holes. | | Source: | arXiv, 1508.0251 | | Services: | Forum | Review | PDF | Favorites | |
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