We study theoretically the collective excitations of a spin-orbit-coupled spin-1 Bose-Einstein
condensate with antiferromagnetic spin-exchange interactions in a cigar-shaped trapping …

We examine the role of thermal fluctuations in binary condensate mixtures of dilute atomic
gases. In particular, we use the Hartree-Fock-Bogoliubov theory with the Popov …

We identify the quantum phases in a binary mixture of dipolar bosons in two-dimensional
optical lattices. Our study is motivated by the recent experimental realization of binary …

We explore the collective excitation of two-species Bose-Einstein condensates (TBECs)
confined in quasi-two-dimensional optical lattices. For this we use a set of coupled discrete …

We analyze the dynamics of two-component vector solitons, namely, dark-bright solitons, via
the variational approximation in Bose-Einstein condensates. The system is described by a …

We show the emergence of a third Goldstone mode in binary condensates at phase
separation in quasi-one-dimensional (quasi-1D) optical lattices. We develop the coupled …

Nambu-Goldstone modes associated with (topological) defects such as vortices and domain
walls in (super) fluids are known to possess quadratic/noninteger dispersion relations in …

We explore the topological transformation of quasi-2D Bose–Einstein condensates of dilute
atomic gases, and changes in the collective modes as the confining potential is modified …

We demonstrate that measurements of number fluctuations within finite cells provide a direct
means to study susceptibility scaling in a trapped two-component Bose-Einstein …

We report the structural transformation of the low-lying spectral modes, especially the Kohn
mode, from radial to circular topology as harmonic confining potential is modified to a …