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

  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},
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… 

Figures and Tables from this paper

Fate of False Vacuum in Non-perturbative Regimes

A formalism to describe the false-vacuum decay in non-perturbative regimes was proposed re-cently. Here, we extend it to the presence of Einstein gravity and calculate the corresponding effective



Fate of the false vacuum: Towards realization with ultra-cold atoms

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

Dynamics and statistical mechanics of ultra-cold Bose gases using c-field techniques

We review phase-space techniques based on the Wigner representation that provide an approximate description of dilute ultra-cold Bose gases. In this approach the quantum field evolution can be

The universe on a table top: engineering quantum decay of a relativistic scalar field from a metastable vacuum

The quantum decay of a relativistic scalar field from a metastable state (‘false vacuum decay’) is a fundamental idea in quantum field theory and cosmology. This occurs via local formation of bubbles

High-accuracy measurement of the 87Rb ground-state hyperfine splitting in an atomic fountain

We describe the operation of a laser-cooled rubidium 87Rb frequency standard. We present a new measurement of the 87Rb hyperfine frequency with a 1.3 × 10−14 relative accuracy, by comparison with a

I and i

There is, I think, something ethereal about i —the square root of minus one, which seems an odd beast at that time—an intruder hovering on the edge of reality.

Physics Reports 520

  • 253
  • 2012

Coherent spinor dynamics in a spin-1 Bose condensate

Collisions in a thermal gas are perceived as random or incoherent as a consequence of the large numbers of initial and final quantum states accessible to the system. In a quantum gas, for example, a

Atomic Physics