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Coupling to the curvature for a scalar field from the equivalence principle

par Sonego, Sebastiano;Faraoni, Valerio
Référence Classical and quantum gravity, 10, 6, page (1185-1187), 015
Publication Publié, 1993

Article révisé par les pairs

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Résumé :

By applying the equivalence principle to the propagation of scalar waves in a curved spacetime, the value 1/6 for the coupling constant between the field and the Ricci scalar is derived. No coupling to higher-order scalars constructed from the Riemann tensor is allowed.