标题： 弦 cosmology 中的球面曲率不均匀性 显示英文标题

标题： Spherical Curvature Inhomogeneities in String Cosmology

摘要： 我们研究了弦宇宙中非线性球对称不均匀性的演化。 通过匹配不同空间曲率的Friedmann解，得到描述非线性密度和曲率不均匀性演化的解。 研究了束缚态和非束缚态不均匀性的演化。 原始黑洞形成的难题在弦宇宙学背景下进行了讨论，并且在演化的大爆炸之前和之后的阶段确定了演化模式。 显示英文摘要

摘要： We study the evolution of non-linear spherically symmetric inhomogeneities in string cosmology. Friedmann solutions of different spatial curvature are matched to produce solutions which describe the evolution of non-linear density and curvature inhomogeneities. The evolution of bound and unbound inhomogeneities are studied. The problem of primordial black hole formation is discussed in the string cosmological context and the pattern of evolution is determined in the pre- and post-big-bang phases of evolution.