In most variable G models [7,8] G is a decreasing function of time. But the possibility of increasing G has only been considered recently [2]. Massa [5] proposed a model in scale of increasing G depending on a "maximal power hypothesis (MPH)." Recently [1], we have considered a cosmological model with variable G and A and bulk viscosity. Various solutions are listed and all of them satisfy Mach's condition [4].
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机译：在大多数变量G模型中，[7,8] G是时间的递减函数。但是增加G的可能性直到最近才被考虑[2]。 Massa [5]提出了一个模型，该模型根据“最大功效假设（MPH）”以G递增的规模。最近[1]，我们考虑了具有可变G和A以及堆积粘度的宇宙学模型。列出了各种解决方案，它们都满足马赫条件[4]。
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