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Cross Section of a Resonant-Mass Detector for Scalar Gravitational Waves

M. Bianchi·M. Brunetti·E. Coccia·F. Fucito·J. A. Lobo
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Abstract

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.

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M. Bianchi, M. Brunetti, E. Coccia, F. Fucito, J. A. Lobo. 1997-09-18. Cross Section of a Resonant-Mass Detector for Scalar Gravitational Waves. https://doi.org/10.1103/physrevd.57.4525

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