Inhomogeneity and the onset of inflation.
Inhomogeneity and the onset of inflation.
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DOI：
10.1103/physrevlett.64.2852
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发表时间：
1990-06
影响因子：
8.6
通讯作者：
Goldwirth;Piran
中科院分区：
文献类型：
--
作者：
Goldwirth;Piran
我们对各种通货膨胀情景和各种初始参数的非均匀初始条件下的通货膨胀开始进行数值研究。在球对称和封闭宇宙背景的假设下，我们求解了与标量场和辐射场源耦合的引力场的完整爱因斯坦方程。我们发现，较大的初始不均匀性会抑制暴胀的发生，并且标量场必须具有适合暴胀阶段开始的几个视界大小区域内的暴胀的值。
We study numerically the onset of inflation under inhomogeneous initial conditions for various inflationary scenarios and various initial parameters. We solve the full Einstein equations for the gravitational field coupled to scalar-field and radiation-field sources, under the assumptions of spherical symmetry and a closed-universe background. We find that a large initial inhomogeneity suppresses the onset of inflation, and that the scalar field must have values suitable for inflation over a region of several horizon sizes for the inflationary phase to begin.