Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2008-08-12
Phys.Rev.D78:042001,2008
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
Scientific paper
10.1103/PhysRevD.78.042001
We propose a new method of searching for the composition-dependent dilatonic waves, predicted by unified theories of strings. In this method, Earth's surface-gravity changes due to translational motions of its inner core, excited by dilatonic waves, are searched for by using superconducting gravimeters. This method has its best sensitivity at the frequency of $\sim$ 7 $\times$ 10$^{-5}$ Hz, which is lower than the sensitive frequencies of previous proposals using gravitational-wave detectors: $\sim$ 10 to 1000 Hz. Using available results of surface-gravity measurements with superconducting gravimeters and assuming a simple Earth model, we present preliminary upper limits on the energy density of a stochastic background of massless dilatons at the low frequency. Though the results are currently limited by the uncertainty in the Earth model, this method has a potential of detecting dilatonic waves in a new window.
No associations
LandOfFree
Proposal for a geophysical search for dilatonic waves does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Proposal for a geophysical search for dilatonic waves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Proposal for a geophysical search for dilatonic waves will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-202564