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Mach's Principle and Model for a Broken Symmetric Theory of Gravity

机译:打破对称对称理论的马赫原理和模型

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We investigate spontaneous symmetry breaking in a conformally invariant gravitational model. In particular, we use a conformally invariant scalar tensor theory as the vacuum sector of a gravitational model to examine the idea that gravitational coupling may be the result of a spontaneous symmetry breaking. In this model matter is taken to be coupled with a metric which is different but conformally related to the metric appearing explicitly in the vacuum sector. We show that after the spontaneous symmetry breaking the resulting theory is consistent with Mach's principle in the sense that inertial masses of particles have variable configurations in a cosmological context. Moreover, our analysis allows to construct a mechanism in which the resulting large vacuum energy density relaxes during evolution of the universe.
机译:我们研究在共形不变引力模型中的自发对称性破裂。特别地,我们使用共形不变的标量张量理论作为引力模型的真空扇区,以检验引力耦合可能是自发对称破坏的结果。在此模型中,物质与一个度量标准耦合,该度量标准不同但与在真空扇区中显式出现的度量标准相关。我们证明,自发对称性破裂后,所得理论与马赫原理一致,即在宇宙学背景下粒子的惯性质量具有可变的构型。此外,我们的分析允许构建一种机制,其中所产生的大真空能量密度在宇宙演化过程中松弛。

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