Berry-Phase Effects on Transport of Low-Energy Squeezed Bosons

Berry-phase effects on the anomalous transport of bosonic particles are more challenging for experimental detection than their Fermion counterparts since the Bose-Einstein statistics weaken such anomalous transport. We propose a method to boost these effects in bosonic systems using bosonic squeezing. This method allows a large Berry curvature to arise near the bottom of the lowest-lying bosonic energy bands so that the Bose-Einstein statistics strengthens (not weakens) the Berry phase effects. Magnonic systems for Berry-phase-induced transport detection are discussed. Our theoretical work is expected to motivate the experimental detection of Berry-phase effects in bosonic systems.