Massive gravitational waves from the R^2 theory of gravity: production and response of interferometers

Abstract

We show that from the R^{2} high order gravity theory it is possible to produce, in the linearized approch, particles which can be seen like massive modes of gravitational waves (GWs). The presence of the mass generates a longitudinal force in addition of the transverse one which is proper of the massless gravitational waves and the response an interferometer to the effect is computed. This could be, in principle, important to discriminate among the gravity theories. The presence of the mass could also have important applications in cosmology because the fact that gravitational waves can have mass could give a contribution to the dark matter of the Universe.

Accepted for the International Journal of Modern Physics A

References in corpus (3)

• A longitudinal component in massive gravitational waves arising from a bimetric theory of gravity
• A solution of linearized Einstein field equations in vacuum used for the detection of the stochastic background of gravitational waves
• The importance of the ''magnetic'' components of gravitational waves in the response functions of interferometers