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01576nam a2200289Ia 4500 |
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10.1103-PhysRevA.105.L041301 |
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220510s2022 CNT 000 0 und d |
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|a 24699926 (ISSN)
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|a False-vacuum decay in an ultracold spin-1 Bose gas
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|b American Physical Society
|c 2022
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| 856 |
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|z View Fulltext in Publisher
|u https://doi.org/10.1103/PhysRevA.105.L041301
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|a We propose an ultracold atom analog of false-vacuum decay using all three states of a spin-1 Bose gas. We consider a one-dimensional system with both radio-frequency and optical Raman couplings between internal states. An advantage of our proposal is the lack of a time-modulated coupling, which can lead to instabilities. Within the elaborate phase structure of the system, we identify an effective Klein-Gordon field and use Gross-Pitaevskii simulations within the truncated Wigner approximation to model the decay of a metastable state. We examine the dependence of the rate of vacuum decay on particle density for Li7 and K41 and find reasonable agreement with instanton methods. © 2022 American Physical Society.
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|a Bose gas
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|a Bosons
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|a Internal state
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|a Klein-Gordon fields
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|a One-dimensional systems
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|a Optical Raman
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|a Radiofrequencies
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|a Raman coupling
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|a Ultra-cold
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|a Ultracold atoms
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|a Wigner approximation
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|a Billam, T.P.
|e author
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|a Brown, K.
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|a Moss, I.G.
|e author
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| 773 |
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|t Physical Review A
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