Investigation of the dynamics of internal gravity waves often includes the interrelationship between wave amplitudes, wave speeds, and wavelengths. These relationships are commonly thought of as dispersion relations. Because internal gravity waves are the result of nonlinear dynamics dispersion relations are a challenge to obtain in a quantitative sense. Model data for internal gravity waves in...

The disadvantage of the majority of data assimilation schemes is the assumption that the conditional probability density function of the state of the system given the observations [posterior probability density function (PDF)] is distributed either locally or globally as aGaussian. The advantage, however, is that through various different mechanisms they ensure initial conditions that are predo...

If string theory is correct, then our observable Universe may be a 3-dimensional “brane” embedded in a higher-dimensional spacetime. This theoretical scenario should be tested via the state-of-the-art in gravitational experiments – the current and upcoming gravity-wave detectors. Indeed, the existence of extra dimensions leads to oscillations that leave a spectroscopic signature in the gravity-...

8:50am–9:40am Cliff Burgess (McMaster/Perimeter Institute) Effective field theories and modified gravity: A bad cop wrapped in a wet blanket standing in a cold shower 9:40-10:30 Norbert Wex (MPI, Bonn) Tests of gravity from radio pulsars 10:30-10:50 Coffee break 10:50-11:40 Pedro Ferreira (Oxford) Testing general relativity with cosmology 11:40-12:30 Nicolas Yunes (Montana State) Gravitational ...

We assess the relative contribution to the COBE-measured microwave anisotropy arising both from relic gravity waves as well as primordial density perturbations originating during inflation. We show that the gravity wave contribution to the CMBR anisotropy depends sensitively upon n – the primordial spectral index (|δ k | 2 ∝ k n), increasing as n deviates from a Harrison-Zeldovich spectrum (n =...