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Essential nature of Newton's constant in unimodular gravity (1511.06560v1)
Published 20 Nov 2015 in hep-th and gr-qc
Abstract: We point out that in unimodular gravity Newton's constant is an essential coupling, i.e. it is independent of field redefinitions. We illustrate the consequences of this fact by a calculation in a standard simple approximation, showing that in this case the renormalization group flow of Newton's constant is gauge and parametrization independent.
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