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Fate of the false vacuum: towards realization with ultra-cold atoms
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Fate of the false vacuum: towards realization with ultra-cold atoms
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Quantum decay of a relativistic scalar field from a false vacuum is a fundamental idea in quantum field theory. It is relevant to models of the early Universe, where the nucleation of bubbles gives rise to an inflationary universe and the creation of matter. Here we propose a laboratory test using an experimental model of an ultra-cold spinor Bose gas. A false vacuum for the relative phase of two spin components, serving as the unstable scalar field, is generated by means of a modulated radio-frequency coupling of the spin components. Numerical simulations demonstrate the spontaneous formation of true vacuum bubbles with realistic parameters and time-scales.
Forward citations
Cited by 2 Pith papers
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Quantum field nucleating and Wigner functions
The one-loop over-the-barrier nucleation rate in a thermal QFT is Affleck’s formula generalized to fields, not Linde’s, and still carries quantum prefactor effects even when the bounce is classically symmetric.
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Evidence for renormalized instantons in real-time simulations of vacuum decay
Ensemble-averaged bubble profiles and decay rates from zero-temperature lattice simulations match Coleman instantons computed in a one-parameter renormalized effective potential, not the bare potential.
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