Abstract
The propagation of linear gravitational waves is studied in open and multiply connected Robertson-Walker cosmologies. In order for the group velocity of the gravitational wave packets to coincide with the speed of light, the linear wave equation must be conformally coupled. This opens the possibility of using the electromagnetic formalism. The gravitational analogue to the electromagnetic field tensor is introduced, and a tensorial counterpart to Maxwell's equations on the spacelike 3-slices is derived. The energy-momentum tensor for linear gravitational waves is constructed without averaging procedures, a strictly positive energy density is obtained, and it is shown that the overall energy of a gravitational pulse scales with the inverse of the expansion factor.
Similar content being viewed by others
References
Ahlfors, L. V. (1981). Möbius transformations in several dimensions, Lecture Notes, University of Minnesota, Minneapolis.
Beardon, A. (1983).The Geometry of Discrete Groups, Springer, New York.
Bjorken, J. D., and Drell, S. D. (1964).Relativistic Quantum Mechanics, McGraw-Hill, New York.
Corson, M. (1953).Introduction to Tensors, Spinors, and Relativistic Wave Equations, Blackie & Son, London.
Fierz, M. (1939).Helvetica Physica Acta,12, 3–37.
Issacson, R. (1968).Physical Review,166, 1263–1271.
Landau, L. D., and Lifshitz, E. M. (1962).The Classical Theory of Fields, Pergamon, Oxford.
Misner, C. W., Thorne, K. S., and Wheeler, J. A. (1973).Gravitation, Freeman, San Francisco, Sections 35.13–15.
Tomaschitz, R. (1993).Journal of Mathematical Physics,34, 3133–3150.
Tomaschitz, R. (1994a).Journal of Mathematical Physics,35, 1573–1596.
Tomaschitz, R. (1994b).International Journal of Theoretical Physics,33, 353–377.
Tomaschitz, R. (1996).Chaos, Solitons & Fractals,7, 753–768.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Tomaschitz, R. Linear gravitational waves and electrodynamic formalism in cosmology. Int J Theor Phys 36, 955–977 (1997). https://doi.org/10.1007/BF02435795
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02435795