Soliton collision in cosmologies with matter
The authors present a family of exact solutions of the four-dimensional Einstein field equations obtained by means of the application of the inverse scattering technique followed by a Kaluza-Klein dimensional reduction. They describe the collision of gravitational solitons on four-dimensional Friedmann-Robertson-Walker backgrounds with a material content consisting of a perfect fluid with a barotropic equation of state. They investigate the behaviour of the stress-energy tensor and show that the collision can form voids and halos. Applications to the Brans-Dicke theory and the problem of geodesic focusing are also considered.
Publication Source (Journal or Book title)
Classical and Quantum Gravity
Cruzate, J., Diaz, M., Gleiser, R., & Pullin, J. (1988). Soliton collision in cosmologies with matter. Classical and Quantum Gravity, 5 (6), 883-889. https://doi.org/10.1088/0264-9381/5/6/009