Chirality of topological gap solitons in bosonic dimer chains
  We study gap solitons which appear in the topological gap of 1D bosonic dimer chains within the mean-field approximation. We find that such solitons have a non-trivial texture of the sublattice pseudospin. We reveal their chiral nature by demonstrating the anisotropy of their behavior in presence of a localized energy potential. 
D.D. Solnyshkov, O. Bleu, B. Teklu, G. Malpuech
cond-mat.mes-hall