The exact WKB for cosmological particle production
نویسندگان
چکیده
A bstract The Bogoliubov transformation in cosmological particle production can be explained by the Stokes phenomena of corresponding ordinary differential equation. calculation becomes very simple as far solution is described a special function. Otherwise, requires more tactics, where Exact WKB (EWKB) may powerful tool. Using EWKB, we discuss focusing on effect general interaction and classical scattering. scattering appears when problem Schrödinger equation develops turning points trajectory. higher process fermionic preheating also discussed using Landau-Zener model.
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ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2021
ISSN: ['1127-2236', '1126-6708', '1029-8479']
DOI: https://doi.org/10.1007/jhep03(2021)090