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Nonlinear gravity as a classical field theory
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[QUOTE="nrqed, post: 5467038, member: 15416"] They mean the terms of order ##M_{Pl}^0 ##, i.e. with no factors of the Planck mass. These would appear if one would include more of the terms that are not shown (where the three dots are). These three dots contain terms that contain factors ##\frac{1}{M_P^2}, \frac{1}{M_P^4} ## and so on. Since they get multiplied by ##M_P^0##, they start at order ##M_P^0##. They therefore basically mean that one should neglect all the terms that are implicitly contained in the three dots. [/QUOTE]
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Nonlinear gravity as a classical field theory
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