How does gravity save or kill Q-balls?

Details How does gravity save or kill Q-balls? How does gravity save or kill Q-balls?

2011-05-15

arxiv.org/abs/1105.2932v1

Phys.Rev.D83:044027,2011

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 10 figures

Scientific paper

10.1103/PhysRevD.83.044027

We explore stability of gravitating Q-balls with potential $V_4(\phi)={m^2\over2}\phi^2-\lambda\phi^4+\frac{\phi^6}{M^2}$ via catastrophe theory, as an extension of our previous work on Q-balls with potential $V_3(\phi)={m^2\over2}\phi^2-\mu\phi^3+\lambda\phi^4$. In flat spacetime Q-balls with $V_4$ in the thick-wall limit are unstable and there is a minimum charge $Q_{{\rm min}}$, where Q-balls with $Q

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