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Cross section of a resonant-mass detector for scalar gravitational waves Detectors Bianchi, M. Brunetti, M. Coccia, E. (Eugenio) Fucito, F. Lobo Gutiérrez, José Alberto, 1953- Ones gravitacionals Relativitat general (Física) Gravitational waves General relativity (Physics) 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. 2010-05-06T08:29:54Z 2010-05-06T08:29:54Z 1998 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 0556-2821 https://hdl.handle.net/2445/12315 188376 eng Reproducció digital del document publicat en format paper, proporcionada per PROLA i http://dx.doi.org/10.1103/PhysRevD.57.4525 Physical Review D, 1998, vol. 57, núm. 8, p. 4525-4534 http://dx.doi.org/10.1103/PhysRevD.57.4525 (c) The American Physical Society, 1998 info:eu-repo/semantics/openAccess 10 p. application/pdf The American Physical Society Articles publicats en revistes (Física de la Matèria Condensada)