标题： 曲率标量的二重性，无自旋和自旋-1/2粒子的产生以及一种新的宇宙学场景 I 显示英文标题

标题： Dual Nature of the Ricci Scalar, Creation of Spinless and Spin-1/2 Particles as Well as a New Cosmological Scenario I

摘要： 在早期的论文中，发现Ricci标量以对偶的方式表现 (i) 像物质场，(ii) 像几何场。 利用Ricci标量的对偶作用，导出了非均匀的宇宙学模型。 这些模型的基本特征是能够表现出致密天体的引力效应，同时在一个膨胀的宇宙中。 在这里，展示了这些模型中无自旋和自旋-1/2粒子的产生。 显示英文摘要

摘要： In earlier papers, it is found that the Ricci scalar behaves in dual manner (i) like a matter field and (ii) like a geometrical field. Using dual role of the Ricci scalar, inhomogeneous cosmological models are derived. The essential features of these models is capability of these to exhibit gravitational effect of compact objects also in an expanding universe. Here, production of spinless and spin-1/2 particles are demonstrated in these models.