Modulational instability and soliton generation in chiral Bose-Einstein condensates with zero-energy nonlinearity
arXiv:2102.09408 · doi:10.1103/PhysRevE.103.032206
Abstract
By means of analytical and numerical methods, we address the modulational instability (MI) in chiral condensates governed by the Gross-Pitaevskiiequation including the current nonlinearity. The analysis shows that this nonlinearity partly suppresses off the MI driven by the cubic self-focusing, although the current nonlinearity is not represented in the system's energy (although it modifies the momentum), hence it may be considered as zero-energy nonlinearity. Direct simulations demonstrate generation of trains of stochastically interacting chiral solitons by MI. In the ring-shaped setup, the MI creates a single traveling solitary wave. The sign of the current nonlinearity determines the direction of propagation of the emerging solitons.
9 pages,8 figures, To be published in Physical Review E
References in corpus (9)
- Many-Body Physics with Ultracold Gases
- Simulating 2+1d Lattice QED with dynamical matter using ultracold atoms
- Modulation instability and solitary wave formation in two-component Bose-Einstein condensates
- Modulational instability, inter-component asymmetry and formation of quantum droplets in one-dimensional binary Bose gases
- Meissner-like effect for synthetic gauge field in multimode cavity QED
- Topological Condensate in an Interaction Induced Gauge Potential
- Lack of a genuine time crystal in a chiral soliton model
- Comment on "Lack of a genuine time crystal in a chiral soliton model" by Syrwid, Kosior, and Sacha
- Response to comment on "Lack of a genuine time crystal in a chiral soliton model" by Öhberg and Wright