Emergence of topological and strongly correlated ground states in trapped Rashba spin-orbit-coupled Bose gases

  title={Emergence of topological and strongly correlated ground states in trapped Rashba spin-orbit-coupled Bose gases},
  author={B. Ramachandhran and Hui Hu and Han Pu},
  journal={Physical Review A},
We theoretically study an interacting few-body system of Rashba spin-orbit coupled two-component Bose gases confined in a harmonic trapping potential. We solve the interacting Hamiltonian at large Rashba coupling strengths using Exact Diagonalization scheme, and obtain the ground state phase diagram for a range of interatomic interactions and particle numbers. At small particle numbers, we observe that the bosons condense to an array of topological states with n+1/2 quantum angular momentum… 

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