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In this paper, we study a realistic model of quintessential inflation with radiation
and matter. By the analysis of the dynamical system and numerical work about the
evolution of the equation of state and cosmic density parameter, we show that this
model is a good match for the current astronomical observation. The conclusion we
obtain is in favour of the model where the modular part of the complex field plays
the role of the inflaton whereas the argument part is the quintessence field.
Numerical calculation shows that a heteroclinic orbit (solution of the dynamical
system) is interpolated between early-time de Sitter phase (an unstable critical
point) and a late-time de Sitter attractor. 相似文献
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