Fate of thermal log type Q balls
arXiv:1007.4235 · doi:10.1103/PhysRevD.82.103534
Abstract
We study time evolution of the ball in thermal logarithmic potential using lattice simulations. As the temperature decreases due to the cosmic expansion, the thermal logarithmic term in the potential is eventually overcome by a mass term, and we confirm that the ball transforms from the thick-wall type to the thin-wall type for a positive coefficient of radiative corrections to the mass term, as recently suggested. Moreover, we find that the ball finally "melts down" when the -ball solution disappears. We also discuss the effects of this phenomenon on the detectability of gravitational waves from the -ball formation.
10 pages, 7 figures, Ver.2, published version