@article{ISI:000399799500008,
 abstract = {Generation of topological phases of matter with SU(3) symmetry in a
condensed-matter setup is challenging due to the lack of an intrinsic
threefold chirality of quasiparticles. We uncover two salient
ingredients required to express a three-component lattice Hamiltonian in
a SU(3) format with a nontrivial topological invariant. We find that all
three SU(3) components must be entangled via a gauge field, with
opposite chirality between any two components, and there must be band
inversions between all three components in a given eigenstate. For
spinless particles, we show that such chiral states can be obtained in a
tripartite lattice with three inequivalent lattice sites in which the
Bloch phase associated with the nearest-neighbor hopping acts as the
k-space gauge field. The second and a more crucial criterion is that
there must also be an odd-parity Zeeman-like term, i. e., sin(k) sz
term, where sz is the third Pauli matrix defined in any two components
of the SU(3) basis. Solving the electron-photon interaction term in a
periodic potential with a modified tight-binding model, we show that
such a term can be engineered with site-selective photon polarization.
Such site-selective polarization can be obtained in multiple ways, such
as using the Sisyphus cooling technique, polarizer plates, etc. With the
k-resolved Berry curvature formalism, we delineate the relationship
between the SU(3) chirality, band inversion, and k-space monopoles,
governing the finite Chern number without breaking the time-reversal
symmetry. The topological phase is affirmed by edge-state calculation,
obeying the bulk-boundary correspondence.},
 article-number = {165425},
 author = {Ray, Sayonee and Ghatak, Ananya and Das, Tanmoy},
 doi = {10.1103/PhysRevB.95.165425},
 eissn = {2469-9969},
 issn = {2469-9950},
 journal = {PHYSICAL REVIEW B},
 month = {APR 17},
 number = {16},
 times-cited = {6},
 title = {Photoinduced SU(3) topological material of spinless fermions},
 unique-id = {ISI:000399799500008},
 volume = {95},
 year = {2017}
}