Symbiotic solitons in a quasi-one- and quasi-two-dimensional spin-1 condensates
| Autor: | Sadhan K. Adhikari |
|---|---|
| Přispěvatelé: | Universidade Estadual Paulista (UNESP) |
| Rok vydání: | 2021 |
| Předmět: |
Physics
Condensed Matter::Quantum Gases Spinor Condensed matter physics Superlattice FOS: Physical sciences Pattern Formation and Solitons (nlin.PS) Type (model theory) Coupling (probability) Nonlinear Sciences - Pattern Formation and Solitons Quantum Gases (cond-mat.quant-gas) Soliton Condensed Matter - Quantum Gases Hyperfine structure Nonlinear Sciences::Pattern Formation and Solitons Stationary state Spin-½ |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| DOI: | 10.48550/arxiv.2107.12194 |
| Popis: | Made available in DSpace on 2022-04-29T08:32:15Z (GMT). No. of bitstreams: 0 Previous issue date: 2021-08-01 We study the formation of spin-1 symbiotic spinor solitons in a quasi-one- (quasi-1D) and quasi-two-dimensional (quasi-2D) hyperfine spin F=1 ferromagnetic Bose-Einstein condensate (BEC). The symbiotic solitons necessarily have a repulsive intraspecies interaction and are bound due to an attractive interspecies interaction. Due to a collapse instability in higher dimensions, an additional spin-orbit coupling is necessary to stabilize a quasi-2D symbiotic spinor soliton. Although a quasi-1D symbiotic soliton has a simple Gaussian-type density distribution, novel spatial periodic structure in density is found in quasi-2D symbiotic SO-coupled spinor solitons. For a weak SO coupling, the quasi-2D solitons are of the (-1,0,+1) or (+1,0,-1) type with intrinsic vorticity and multiring structure, for Rashba or Dresselhaus SO coupling, respectively, where the numbers in the parentheses are angular momenta projections in spin components Fz=+1,0,-1, respectively. For a strong SO coupling, stripe and superlattice solitons, respectively, with a stripe and square-lattice modulation in density, are found in addition to the multiring solitons. The stationary states were obtained by imaginary-time propagation of a mean-field model; dynamical stability of the solitons was established by real-time propagation over a long period of time. The possibility of the creation of such a soliton by removing the trap of a confined spin-1 BEC in a laboratory is also demonstrated. Instituto de Física Teórica Universidade Estadual Paulista - Unesp, São Paulo Instituto de Física Teórica Universidade Estadual Paulista - Unesp, São Paulo |
| Databáze: | OpenAIRE |
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