title: Chirality of Topological Gap Solitons in Bosonic Dimer Chains.
abstract: 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 nontrivial texture of the sublattice pseudospin. We reveal their chiral nature by demonstrating the anisotropy of their behavior in the presence of a localized energy potential.
authors.affiliation: Institut Pascal, PHOTON-N2, University Clermont Auvergne, CNRS, 4 avenue Blaise Pascal, 63178 Aubière Cedex, France.
authors.forename: D D
authors.initials: DD
authors.lastname: Solnyshkov
authors.affiliation: Institut Pascal, PHOTON-N2, University Clermont Auvergne, CNRS, 4 avenue Blaise Pascal, 63178 Aubière Cedex, France.
authors.forename: O
authors.initials: O
authors.lastname: Bleu
authors.affiliation: Institut Pascal, PHOTON-N2, University Clermont Auvergne, CNRS, 4 avenue Blaise Pascal, 63178 Aubière Cedex, France.
authors.forename: B
authors.initials: B
authors.lastname: Teklu
authors.affiliation: Institut Pascal, PHOTON-N2, University Clermont Auvergne, CNRS, 4 avenue Blaise Pascal, 63178 Aubière Cedex, France.
authors.forename: G
authors.initials: G
authors.lastname: Malpuech