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arxiv: 1511.06560 · v1 · pith:UXJXQ3ABnew · submitted 2015-11-20 · ✦ hep-th · gr-qc

Essential nature of Newton's constant in unimodular gravity

classification ✦ hep-th gr-qc
keywords constantnewtonessentialgravityindependentunimodularapproximationcalculation
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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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