129 citations · 1k across the 41 of their papers we have counts for
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Symmetric and conserved energy-momentum tensors in moving media
Finn Ravndal
A symmetric and conserved energy-momentum tensor for a scalar field in a moving medium is derived using the Gordon metric. When applied to an electromagnetic field, the method give…
Gravity coupled to a scalar field in extra dimensions
Ingunn Kathrine Wehus, Finn Ravndal
In d+1 dimensions we solve the equations of motion for the case of gravity minimally or conformally coupled to a scalar field. For the minimally coupled system the equations can ei…
Scalar Gravitation and Extra Dimensions
Finn Ravndal
Gunnar Nordstrom constructed the first relativistic theory of gravitation formulated in terms of interactions with a scalar field. It was an important precursor to Einstein's gener…
Graviton-photon conversion on spin 0 and 1/2 particles
Finn Ravndal, Mats Sundberg
The differential cross-sections for scattering of gravitons into photons on bosons and fermions are calculated in linearized quantum gravity. They are found to be strongly peaked i…