Josephson oscillations in split one-dimensional Bose gases

We consider the non-equilibrium dynamics of a weakly interacting Bose gas tightly confined to a highly elongated double well potential. We use a self-consistent time-dependent Hartree–Fock approximation in combination with a projection of the full three-dimensional theory to several coupled one-dimensional channels. This allows us to model the time-dependent splitting and phase imprinting of a gas initially confined to a single quasi one-dimensional potential well and obtain a microscopic description of the ensuing damped Josephson oscillations.

Y. D. van Nieuwkerk, J. Schmiedmayer and F. H.L. Essler, “Josephson oscillations in split
one-dimensional Bose gases”, SciPost Phys. 10, 090 (2021).

https://scipost.org/10.21468/SciPostPhys.10.4.090

Related to Project A03