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arXiv · 1007.4235

Fate of thermal log type Q balls

Takeshi Chiba·Kohei Kamada·Shinta Kasuya·Masahide Yamaguchi
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Abstract

We study time evolution of the $Q$ 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 $Q$ 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 $Q$ ball finally "melts down" when the $Q$-ball solution disappears. We also discuss the effects of this phenomenon on the detectability of gravitational waves from the $Q$-ball formation.

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Takeshi Chiba, Kohei Kamada, Shinta Kasuya, Masahide Yamaguchi. 2010-11-30. Fate of thermal log type Q balls. https://doi.org/10.1103/physrevd.82.103534

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