http://arxiv.org/abs/2108.05510
We present a general method for computing the gravitational radiation arising from the motion of bubble walls or thin fluid shells in cosmological phase transitions. We discuss the application of this method to different wall kinematics. In particular, we derive general expressions for the bubble collision mechanism and the so-called bulk flow model, and we also consider deformations from the spherical bubble shape. We calculate the gravitational wave spectrum for a specific model of deformations on a definite size scale.
A. Megevand and F. Membiela
Fri, 13 Aug 21
34/64
Comments: 41 pages, 4 figures
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