In this work we consider particle creation by the expansion of the universe, using two Bianchi type I anisotropic models. The particles studied are of spin 0 and 1/2. The cosmological models have rotational symmetry, which allows us to solve exactly the equations of motion. The number density of the created particles is calculated with the method of Bogolubov transformations.

中文翻译：

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一些 LRS Bianchi I 模型中的粒子创建

在这项工作中，我们使用两个 Bianchi I 型各向异性模型来考虑由宇宙膨胀产生的粒子。研究的粒子自旋为 0 和 1/2。宇宙学模型具有旋转对称性，这使我们能够准确地求解运动方程。所产生粒子的数密度是用 Bogolubov 变换的方法计算的。