Tichy, Malte C.3; Bouvrier, P. Alexander2; Mølmer, Klaus3
1 Department of Physics and Astronomy, Science and Technology, Aarhus University2 Universidad de Granada3 Department of Physics and Astronomy, Science and Technology, Aarhus University
Composite bosons made of two bosonic constituents exhibit deviations from ideal bosonic behavior due to their substructure. This deviation is reflected by the normalization ratio of the quantum state of N composites. We find a set of saturable, efficiently evaluable bounds for this indicator, which quantifies the bosonic behavior of composites via the entanglement of their constituents. We predict an abrupt transition between ordinary and exaggerated bosonic behavior in a condensate of two-boson composites.
Physical Review a (atomic, Molecular and Optical Physics), 2013, Vol 88, Issue 6