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oai:recercat.cat:2445/123152025-12-04T20:45:19Zcom_2072_1057col_2072_478822col_2072_478917

00925njm 22002777a 4500 dc Bianchi, M. author Brunetti, M. author Coccia, E. (Eugenio) author Fucito, F. author Lobo Gutiérrez, José Alberto, 1953- author 2010-05-06T08:29:54Z 2010-05-06T08:29:54Z 1998 Gravitationally coupled scalar fields, originally introduced by Jordan, Brans and Dicke to account for a non-constant gravitational coupling, are a prediction of many non-Einsteinian theories of gravity not excluding perturbative formulations of string theory. In this paper, we compute the cross sections for scattering and absorption of scalar and tensor gravitational waves by a resonant-mass detector in the framework of the Jordan-Brans-Dicke theory. The results are then specialized to the case of a detector of spherical shape and shown to reproduce those obtained in general relativity in a certain limit. Eventually we discuss the potential detectability of scalar waves emitted in a spherically symmetric gravitational collapse. Ones gravitacionals Relativitat general (Física) Gravitational waves General relativity (Physics) Cross section of a resonant-mass detector for scalar gravitational waves Detectors