Thermal suppression of demixing dynamics in a binary condensate
- URL: http://arxiv.org/abs/2303.04824v1
- Date: Wed, 8 Mar 2023 19:00:04 GMT
- Title: Thermal suppression of demixing dynamics in a binary condensate
- Authors: Vijay Pal Singh, Luigi Amico, Ludwig Mathey
- Abstract summary: We investigate the demixing dynamics in a binary two-dimensional (2D) Bose superfluid using classical-field dynamics.
For low quench we find distinctive domain dynamics dictated by the boundary condition. Otherwise, the dynamics are qualitatively similar to those of systems with periodic boundary conditions.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: We investigate the demixing dynamics in a binary two-dimensional (2D) Bose
superfluid using classical-field dynamics. By quenching the interspecies
interaction parameter, we identify a strong and weak separation regime
depending on the system temperature and the quench parameter. In the strong
separation regime our results are in agreement with the inertial hydrodynamic
domain growth law of binary fluids and a Porod scaling law for the structure
factor at zero temperature is found. In the weak separation regime thermal
fluctuations modify both the domain growth law and the Porod tail of the
structure factor. Near the superfluid transition temperature the scaling
dynamics approaches the diffusive growth law of a 2D conserved field. We then
analyze the demixing dynamics in a box cloud. For low quench we find
distinctive domain dynamics dictated by the boundary condition. Otherwise, the
dynamics are qualitatively similar to those of systems with periodic boundary
conditions.
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