K. and Wilkens, M. two cold atoms in a harmonic trap

Thomas Busch, Berthold‐Georg Englert, Kazimierz Rza̧żewski +1 more

Patrick Shea, Brandon P. van Zyl, Rajat K. Bhaduri

We consider two bosonic atoms interacting with a short-range potential and trapped in a spherically symmetric harmonic oscillator. The problem is exactly solvable and is relevant for the study of ultra-cold atoms. We show that the energy spectrum is universal, irrespective of the shape of the interaction potential, provided its range is much smaller than the oscillator length.

Ronen M. Kroeze

Brett Allen McKinney, Martin Dunn, D. K. Watson

Tao Zhou, Z. D. Wang

We here explore Majorana fermion states in an $s$-wave superfluid of cold atoms in the presence of spin-orbital coupling and an additional harmonic potential. The superfluid boundary is induced by a harmonic trap. Two locally separated Majorana fermion states are revealed numerically based on the self-consistent Bogoliubov-de Gennes equations. The local density of states is calculated, through which the signatures of Majorana excitations may be indicated experimentally.

Pooja Nadkarni Singh, Yuri V. Rostovtsev