2006/10/11 by Ramón Herrera, R. Herrera, Sérgio del Campo +3 · 2 citations
Physics and Astronomy · #Astrophysics #Black Holes and Theoretical Physics #Cosmological constant #Cosmology #Cosmology and Gravitation Theories #Dark energy #Galaxies: Formation, Evolution, Phenomena #Inflation (cosmology) #Inflationary epoch #Metric expansion of space #Physics #Tachyon #Theoretical physics #Universe #astro-ph #gr-qc #hep-ph #hep-th
paper · pdf · doi:10.1088/1475-7516/2006/10/009
published as JCAP 0610:009,2006 · 21 pages, Accepted by JCAP
arxiv created 2006/10/11 · openalex publication_date 2006/10/16 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Warm inflationary universe models in a tachyon field theory are studied. General conditions required for these models to be realizable are derived and discussed. We describe scalar perturbations (in the longitudinal gauge) and tensor perturbations for these scenarios. We develop our models for a constant dissipation parameter Γ in one case and one dependent on ϕ in the other case. We have been successful in describing such inflationary universe models. We use recent astronomical observations for constraining the parameters appearing in our model. Also, our results are compared with their analogues found in the cool inflationary case.