Fano resonance through Higgs bound states in tunneling of Nambu-Goldstone modes
Fano resonance through Higgs bound states in tunneling of Nambu-Goldstone modes
We study collective modes of superfluid Bose gases in optical lattices combined with potential barriers. We assume that the system is in the vicinity of the quantum phase transition to a Mott insulator at a commensurate filling, where emergent particle-hole symmetry gives rise to two types of collective mode, namely …