  We introduce the topological mirror excitonic insulator as a new type of
interacting topological crystalline phase in one dimension. Its
mirror-symmetry-protected topological properties are driven by exciton physics,
and it manifests in the quantized bulk polarization and half-charge modes on
the boundary. And the bosonization analysis is performed to demonstrate its
robustness against strong correlation effects in one dimension. Besides, we
also show that Rashba nanowires and Dirac semimetal nanowires could provide
ideal experimental platforms to realize this new topological mirror excitonic
insulating state. Its experimental consequences, such as quantized tunneling
conductance in the tunneling measurement, are also discussed.

Strongly Correlated Electrons;Mesoscale and Nanoscale Physics