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Jordan and Einstein frames

The Lagrangian in scalar-tensor theory can be expressed in the Jordan frame or in the Einstein frame, which are field variables that stress different aspects of the gravitational field equations and the evolution equations of the matter fields. In the Jordan frame the scalar field or some function of it multiplies the Ricci scalar in the Lagrangian and…

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Equations and physical interpretation

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Jordan and Einstein frames

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frame einstein jordan field equations matter displaystyle action gravitational theory fields metric test contact coupled particles move geodesics terms effective

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