Álvarez, EnriqueAnero, JesúsPérez Martín, CarmeloVelasco-Aja, EduardoAmerican Physical Society2024-04-032024-04-032023-07-212470-001010.1103/physrevd.108.026013https://hdl.handle.net/20.500.14352/1026532023 Descuento SCOAP One of us (E. A.) acknowledges useful e-mail discussions with Luis Alvarez-Gaume and Gia Dvali. We acknowledge partial financial support by the Spanish MINECO through the Centro de excelencia Severo Ochoa Program under Grant No. CEX2020-001007-S funded by MCIN/AEI/10.13039/501100011033 All authors acknowledge the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie Grant Agreement No. 860881-HIDDeN and also by Grant No. PID2019-108892RB-I00 funded by MCIN/AEI/10.13039/501100011033 and by "ERDF A way of making Europe".When implementing a nonlinear constraint in quantum field theory by means of a Lagrange multiplier, lambda(x), it is often the case that quantum dynamics induce quadratic and even higher-order terms in. lambda(x), which then does not enforce the constraint anymore. This is illustrated in the case of unimodular gravity, where the constraint is that the metric tensor has to be unimodular (g(x) = det g mu nu (x) = -1).engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/journal article2470-0029https://doi.org/10.1103/PhysRevD.108.026013open access539.1RenormalizationGravityPartículas2207 Física Atómica y Nuclear