2000 character limit reached
Collective excitations of two-dimensional Bose-Einstein Condensate in liquid phase with spin-orbit coupling (1910.00264v2)
Published 1 Oct 2019 in cond-mat.quant-gas and cond-mat.stat-mech
Abstract: We have studied the collective excitation of Bose-Einstein condensate of short range weak interacting atoms with spin-orbit coupling (SOC) in two dimension in liquid phase. In our study, we have included Rashba, Dresselhaus SOC as well as Raman SOC. The study of Bogoliubov excitation shows that in small interaction case only phonon modes are present and for higher interactions roton modes start to appear. Energy spectra contain two roton modes in the system relatively strong interacting atomic system.