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اخترفیزیک و علوم فضایی 2012
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  • how does inflation depend upon the nature of fluids filling up the universe in brane world scenario?

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    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 910
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
      by constructing different parameters which are able to give us the information about our universe during inflation, (specially at the start and the end of the inflationary universe) a brief idea of brane world inflation is given in this work. what will be the size of the universe at the end of inflation, i.e., how many times will it grow than the original size is been speculated and analysed thereafter. different kinds of fluids are taken to be the matter inside the brane. it is observed that in the case of highly positive pressure giving gas like polytropic, the size of the universe at the end of inflation is comparatively smaller. whereas for negative pressure creators (like chaplygin gas) this size is much bigger. except these two cases, inflation has been studied for barotropic fluid and linear red shift parametrization ω(z) = ω0 + ω1z too. for them the size of the universe after inflation is much more high.we also have seen that this size does not depend upon the potential energy at the end of the inflation. on the contrary, there is a high impact of the initial potential energy upon the size of inflation.

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