Density fluctuations from warm inflation
148 citations recorded by the source corpus.
Thermal fluctuations provide the main source of large scale density perturbations in warm inflationary models of the early universe. For the first time, general results are obtained for the power spectrum in the case when the friction coefficient in the inflaton equation of motion depends on temperature. A large increase in the amplitude of perturbations occurs when the friction coefficient increases with temperature. This has to be taken into account when constructing models of warm inflation. New results are also given for the thermal fluctuations in the weak regime of warm inflation when the friction coefficient is relatively small.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics, Oceanography
View Paper: https://www.semanticscholar.org/paper/7675113ee8567d642cba07ee6c131db7c0bd8517
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In Astronomy and Astrophysics
In Nuclear and High Energy Physics
In Oceanography
Citations in the corpus
- Dissipation coefficients from scalar and fermion quantum field interactions (2010, background): “[35, 36], where it was shown how the temperature dependence of the dissipation coefficient can affect the power spectrum of perturbations.”
- Power spectrum for inflation models with quantum and thermal noises (2013, background): “[15] have also found a similar result for the power spectrum, except that they have, instead of Υ in their result, an effective dissipation coefficient Υeff .”