在Salam-Sezgin宇宙学模型中暴胀、暗能量和暗物质的统一
Unification of inflation, dark energy, and dark matter within the Salam-Sezgin cosmological model
摘要：
我们研究了一个宇宙学模型，该模型基于Salam-Sezgin六维超引力理论和Anchordoqui，Goldberg，Nawata和Nuñez以前的工作。假设一个时期的温暖的通货膨胀，我们表明，这是可能的，以延长模型的演变回的时间，包括通货膨胀时期，从而统一的通货膨胀，暗物质，和暗能量在一个单一的框架。和前面的作者一样，我们无法从萨拉姆-塞兹金标量场中获得宇宙的全部暗物质含量。然而，即使只是部分成功，这项工作表明，基于超弦和超引力的现代理论最终可能导致宇宙演化的全面建模。我们发现，该模型的引力波谱在10^（-15）-10^6 rad/s的频率范围内有一个非恒定的负斜率，而且与标准（冷）暴胀模型不同，它在MHz/GHz的频率范围内没有显示出结构。
英文摘要：
We investigate a cosmological model, based on the Salam-Sezgin six-dimensional supergravity theory and on previous work by Anchordoqui, Goldberg, Nawata, and Nuñez. Assuming a period of warm inflation, we show that it is possible to extend the evolution of the model back in time, to include the inflationary period, thus unifying inflation, dark matter, and dark energy within a single framework. Like the previous authors, we were not able to obtain the full dark matter content of the Universe from the Salam-Sezgin scalar fields. However, even if only partially successful, this work shows that present-day theories, based on superstrings and supergravity, may eventually lead to a comprehensive modelling of the evolution of the Universe. We find that the gravitational-wave spectrum of the model has a non-constant negative slope in the frequency range 10^(-15)-10^6 rad/s, and that, unlike standard (cold) inflation models, it shows no structure in the MHz/GHz range of frequencies.
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