Abstract：
:Strongly interacting one-dimensional quantum systems often behave in a manner that is distinctly different from their higher-dimensional counterparts. When a particle attempts to move in a one-dimensional environment it will unavoidably have to interact and 'push' other particles in order to execute a pattern of motion, irrespective of whether the particles are fermions or bosons. A present frontier in both theory and experiment are mixed systems of different species and/or particles with multiple internal degrees of freedom. Here we consider trapped two-component bosons with short-range inter-species interactions much larger than their intra-species interactions and show that they have novel energetic and magnetic properties. In the strongly interacting regime, these systems have energies that are fractions of the basic harmonic oscillator trap quantum and have spatially separated ground states with manifestly ferromagnetic wave functions. Furthermore, we predict excited states that have perfect antiferromagnetic ordering. This holds for both balanced and imbalanced systems, and we show that it is a generic feature as one crosses from few- to many-body systems.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Dehkharghani A,Volosniev A,Lindgren J,Rotureau J,Forssén C,Fedorov D,Jensen A,Zinner Ndoi
10.1038/srep10675subject
Has Abstractpub_date
2015-06-15 00:00:00pages
10675issn
2045-2322pii
srep10675journal_volume
5pub_type
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