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- W2164286284 abstract "In a recently proposed model of ``ghost condensation'', spatially homogeneous states may mix, via tunneling, with inhomogeneous states which are somewhat similar to bubbles in the theory of false vacuum decay, the corresponding bubble nucleation rate being exponentially sensitive to the ultraviolet completion of the model. The conservation of energy and charge requires that the energy density is negative and the field is strongly unstable in a part of the nucleated bubble. Unlike in the theory of false vacuum decay, this region does not expand during subsequent real-time evolution. In the outer part, positive energy outgoing waves develop, which eventually form shocks. Behind the outgoing waves and away from the bubble center, the background settles down to its original value. The outcome of the entire process is thus a microscopic region of negative energy and strong field -- ``hole in the ghost condensate'' -- plus a collection of outgoing waves (particles of the ghost condensate field) carrying away finite energy." @default.
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- W2164286284 date "2005-02-25" @default.
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- W2164286284 title "Holes in the ghost condensate" @default.
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- W2164286284 doi "https://doi.org/10.1103/physrevd.71.045014" @default.
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