Dynamics of domain walls in a Bose-Einstein condensate driven by
density-dependent gauge field
- URL: http://arxiv.org/abs/2105.15052v1
- Date: Mon, 31 May 2021 15:36:20 GMT
- Title: Dynamics of domain walls in a Bose-Einstein condensate driven by
density-dependent gauge field
- Authors: Kai-Xuan Yao, Zhendong Zhang, Cheng Chin
- Abstract summary: Dynamical coupling between matter and gauge fields underlies the emergence of many exotic particle-like excitations in condensed matter.
Here we demonstrate deterministic formation of domain walls in a stable Bose-Einstein condensate with a synthetic gauge field that depends on the atomic density.
- Score: 8.282602586225831
- License: http://creativecommons.org/licenses/by/4.0/
- Abstract: Dynamical coupling between matter and gauge fields underlies the emergence of
many exotic particle-like excitations in condensed matter and high energy
physics. An important stepping stone to simulate this physics in atomic quantum
gases relies on the synthesis of density-dependent gauge fields. Here we
demonstrate deterministic formation of domain walls in a stable Bose-Einstein
condensate with a synthetic gauge field that depends on the atomic density. The
gauge field is created by simultaneous modulations of the optical lattice
potential and interatomic interactions, and results in domains of atoms
condensed into two different momenta. Modeling the domain walls as elementary
excitations, we find that the domain walls respond to synthetic electric field
with a charge-to-mass ratio larger than and opposite to that of the bare atoms.
Our work offers promising prospects to simulate the dynamics and interactions
of novel excitations in quantum systems with dynamical gauge fields.
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