  We study the topological phases in spin-orbit coupled dipolar bosons in a
one-dimensional optical lattice. The magnetic dipolar interactions between
atoms give rise to the inter-site interactions. In the Mott-insulating regime,
this system can be described by the quantum XYZ spin model with the
Dzyaloshinskii-Moriya interactions in a transverse field. We focus on
investigating the effect of dipolar interactions on the topological phase. The
topological phase can be shown when spin-orbit coupling incorporates with the
repulsive dipolar interaction. We find that the dipolar interaction can broaden
the range of parameters of spin-orbit coupling and transverse field for
exhibiting the topological phase. The sum of spin correlations between the two
nearest neighbouring atoms can be used to indicate the topological phase. This
may be useful for detecting topological phases in experiments.
