79 citations · 782 across the 30 of their papers we have counts for
13 papers · 1 filter
Non-linear response of interacting bosons in a quasiperiodic potential
Debamalya Dutta, Arko Roy, Kush Saha
We theoretically study the electric pulse-driven non-linear response of interacting bosons loaded in an optical lattice in the presence of an incommensurate superlattice potential.…
Berry curvature and Hall viscosities in an anisotropic Dirac semi-metal
Francisco Pena-Benitez, Kush Saha, Piotr Surowka
We investigate parity-odd non-dissipative transport in an anisotropic Dirac semi-metal in two spatial dimensions. The analysis is relevant for interacting electronic systems with m…
Photoinduced Chern insulating states in semi-Dirac materials
Kush Saha
Two-dimensional (2D) semi-Dirac materials are characterized by a quadratic dispersion in one direction and a linear dispersion along the orthogonal direction. We study the topologi…
Detecting band inversions by measuring the environment: fingerprints of electronic band topology in bulk phonon linewidths
Kush Saha, Katherine Légaré, Ion Garate
The interplay between topological phases of matter and dissipative baths constitutes an emergent research topic with links to condensed matter, photonic crystals, cold atomic gases…
Surface-to-bulk scattering in topological insulator films
Kush Saha, Ion Garate
We present a quantitative microscopic theory of the disorder- and phonon-induced coupling between surface and bulk states in topological insulator (TI) films. We find a simple stru…
Phonon-induced topological insulation
Kush Saha, Ion Garate
We develop an approximate theory of phonon-induced topological insulation in Dirac materials. In the weak coupling regime, long wavelength phonons may favor topological phases in D…