I-ball formation with logarithmic potential

Abstract

A coherently oscillating real scalar field with potential shallower than quadratic one fragments into spherical objects called I-balls. We study the I-ball formation for logarithmic potential which appears in many cosmological models. We perform lattice simulations and find that the I-balls are formed when the potential becomes dominated by the quadratic term. Furthermore, we estimate the I-ball profile assuming that the adiabatic invariant is conserved during formation and obtain the result that agrees to the numerical simulations.

16 pages, 6 figures

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• Quantum Radiation of Oscillons
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Cited by in corpus (6)

• Probing Dynamics of Boson Stars by Fast Radio Bursts and Gravitational Wave Detection
• Correspondence of I- and Q-balls as Non-relativistic Condensates
• Non-topological solitons and quasi-solitons
• The virial relation for the Q-balls in the thermal logarithmic potential revisited analytically
• Decay and lifetime of oscillons coupled to an external scalar field: Insights from instability band analysis
• The further estimations of the Q-balls with one-loop motivated effective potential