A tanh-parametrized scalar field in f(Q,Lm) gravity fits combined cosmological data, but its slope parameter is consistent with zero, so the model reduces to ΛCDM and shows no evidence of dynamical scalar field behavior.
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Observational signatures of scalar field dynamics in modified $f(Q, L_m)$ gravity
A tanh-parametrized scalar field in f(Q,Lm) gravity fits combined cosmological data, but its slope parameter is consistent with zero, so the model reduces to ΛCDM and shows no evidence of dynamical scalar field behavior.