Journal
PHYSICAL REVIEW A
Volume 102, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.102.053323
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Funding
- Heidelberg Graduate School of Fundamental Physics (HGSFP)
- Heidelberg Center for Quantum Dynamics (CQD)
- European Commission, within the Horizon-2020 programme, through the ERC Advanced Grant EntangleGen [694561]
- Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) [273811115-SFB 1225]
- US National Science Foundation [PHY-1602994, DMS-1809074]
- Alexander von Humboldt Foundation
- Leverhulme Trust
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We consider a one-dimensional trapped spin-1 Bose gas and numerically explore families of its solitonic solutions, namely antidark-dark-antidark (ADDAD), as well as dark-antidark-dark (DADD) solitary waves. Their existence and stability properties are systematically investigated within the experimentally accessible easy-plane ferromagnetic phase by means of a continuation over the atom number as well as the quadratic Zeeman energy. It is found that ADDADs are substantially more dynamically robust than DADDs. The latter are typically unstable within the examined parameter range. The dynamical evolution of both of these states is explored and the implication of their potential unstable evolution is studied. Some of the relevant observed possibilities involve, e.g., symmetry-breaking instability manifestations for the ADDAD, as well as splitting of the DADD into a right-and a left-moving dark-antidark pair with the antidarks residing in a different component as compared with prior to the splitting. In the latter case, the structures are seen to disperse upon long-time propagation.
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