Soliton lattices in the Gross–Pitaevskii equation with nonlocal and repulsive coupling

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Spatially-periodic patterns are studied in nonlocally coupled Gross–Pitaevskii equation. We show first that spatially periodic patterns appear in a model with the dipole–dipole interaction. Next, we study a model with a finite-range coupling, and show that a repulsively coupled system is closely related with an attractively coupled system and its soliton solution becomes a building block of the spatially-periodic structure. That is, the spatially-periodic structure can be interpreted as a soliton lattice. An approximate form of the soliton is given by a variational method. Furthermore, the effects of the rotating harmonic potential and spin-orbit coupling are numerically studied.

Original languageEnglish
Pages (from-to)1132-1137
Number of pages6
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Issue number11
Publication statusPublished - Mar 25 2019

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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