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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
Universitat de Barcelona
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.
11-05-2010
Ones gravitacionals
Relativitat general (Física)
Gravitational waves
General relativity (Physics)
(c) The American Physical Society, 1998
Article
The American Physical Society
         

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