False-vacuum decay in an ultracold spin-1 Bose gas

@article{Billam2021FalsevacuumDI,
  title={False-vacuum decay in an ultracold spin-1 Bose gas},
  author={Thomas P. Billam and Kate Brown and Ian G. Moss},
  journal={Physical Review A},
  year={2021}
}
We propose an ultracold atom analogue 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 coupling 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 GrossPitaevskii simulations within the truncated Wigner approximation to… 
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