67 citations · 545 across the 29 of their papers we have counts for
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cond-mat.quant-gas2017★ 33 cited
Two-species boson mixture on a ring: A group theoretic approach to the quantum dynamics of low-energy excitations
Vittorio Penna, Andrea Richaud
We investigate the weak excitations of a system made up of two condensates trapped in a Bose-Hubbard ring and coupled by an interspecies repulsive interaction. Our approach, based…
cond-mat.quant-gas2017★ 33 cited
Quantum dynamics of bosons in a two-ring ladder: dynamical algebra, vortex-like excitations and currents
Andrea Richaud, Vittorio Penna
We study the quantum dynamics of the Bose-Hubbard model on a ladder formed by two rings coupled by tunneling effect. By implementing the Bogoliubov approximation scheme, we prove t…