标题： p-膜和Brans-Dicke宇宙学中含物质的精确解 显示英文标题

标题： p-Branes and Exact solutions in Brans-Dicke cosmology with matter

摘要： 我们沿着Rama的研究路线，研究弦宇宙学中孤子自由度的影响。 p-膜孤子气体在Brans-Dicke型理论中被当作完美流体处理。 本文中，我们针对具有广义Brans-Dicke参数$\omega$的若干可解状态方程情形，找到了解析解，并研究了解的宇宙学性质。 在某些情况下，这些解没有初始奇异性。 显示英文摘要

摘要： We study the effect of the solitonic degree of freedom in string cosmology following the line of Rama. The gas of solitonic p-brane is treated as a perfect fluid in a Brans-Dicke type theory. In this paper, we find analytic solutions for a few solvable cases of equation of states with general Brans-Dicke parameter $\omega$ and study the cosmology of the solutions. In some cases the solutions are free from initial singularity.