Cosmological perturbation with two scalar elds in reheating after in ation
نویسنده
چکیده
We i n vestigate the cosmological perturbation of two-scalar eld model during the reheating phase after innation. Using the exact solution of the perturbation in long-wavelength limit, which is expressed in terms of the background quantities, we analyze the behavior of the metric perturbation. The oscillating innaton eld gives rise to the parametric resonance of the massless scalar eld and this leads to the ampliication of the iso-curvature mode of the metric perturbations.
منابع مشابه
Nonthermal phase transitions after inflation.
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