5 papers
Quasiparticle modes across soliton transition with density-dependent gauge field in optical lattices
Poorava Kumar Meena, Kuldeep Suthar
Tunneling of ultracold bosons confined in a one-dimensional optical lattice results in a nontrivial gauge field depending on density-difference between the sites involved. The dens…
Potential-defect-driven collective modes of one-dimensional two-component quantum droplets
Harsimranjit Kaur, Kuldeep Suthar
We examine a one-dimensional binary mixture of ultradilute quantum droplets in the presence of a central potential defect. The properties of the potential strength and the number o…
Quasiparticle spectra of mixtures of dipolar and non-dipolar condensates at zero and finite temperatures
Harsimranjit Kaur, Kuldeep Suthar
We examine the low-lying collective quasiparticle modes of a quasi-one-dimensional mixture of Bose-Einstein condensates having dipolar and non-dipolar atomic species. The dipolar a…
Collective modes of two-species Bose-Einstein condensates in a Josephson junction barrier
Harsimranjit Kaur, Kuldeep Suthar
The ultracold atoms are an ideal platform to implement atomtronics and Josephson junctions analogous to superconducting circuits. The collective modes of a Bose gas split by a pote…
Boundary-driven many-body phase transitions in a non-Hermitian disordered fermionic chain
Kuldeep Suthar
The non-Hermitian systems exhibit extreme sensitivity to the boundary conditions. The change in the eigenspectrum with tunning boundary parameter is intimately connected to the non…