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2013

On the quantum stability of Q-balls

Tranberg, Anders, Weir, David J.

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We consider the evolution and decay of Q-balls under the influence of quantum fluctuations.

We argue that the most important effect resulting from these fluctuations is the modification of the effective potential in which the Q-ball evolves.
This is in addition to spontaneous decay into elementary particle excitations and fission into smaller Q-balls previously considered in the literature, which -- like most tunnelling processes -- are likely to be strongly suppressed.
We illustrate the effect of quantum fluctuations in a particular model $\phi^6$ potential, for which we implement the inhomogeneous Hartree approximation to quantum dynamics and solve for the evolution of Q-balls in 3+1 dimensions.

On the quantum stability of Q-balls · Around

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