The Lamé equation in parametric resonance after inflation
نویسندگان
چکیده
منابع مشابه
The Lamé equation in parametric resonance after inflation
We show that the most general inflaton potential in Minkowski spacetime for which the differential equation for the Fourier modes of the matter fields reduces to Lamé’s equation is of the form V (φ) = λφ/4 + Kφ/2 + μ/(2φ) + V0. As an application, we study the preheating phase after inflation for the above potential with K = 0 and arbitrary λ, μ > 0. For certain values of the coupling constant b...
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For nearly a decade it has been known that coherent processes at the end of inflation can drive explosive particle production [1] via parametric resonance, leading to an era of preheating in the post-inflationary universe. Earlier assumptions about the transfer of energy from the inflaton to “regular” matter have been overturned, and the phenomenology of the post-inflationary universe is thus m...
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We study numerically the decay of massive and massless inflatons into massive excitations, via a φX coupling, in the expanding Universe. We find that a wide enough resonance can survive the Universe expansion, though account for the expansion is very important for determining precisely how wide it should be. For a massive inflaton, the effective production of particles with mass ten times that ...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 2000
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.62.103515