Quantum magnetism in strongly interacting one-dimensional spinor Bose systems
Journal article, 2015

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.

Author

A. Dehkharghani

Aarhus University

A. G. Volosniev

Aarhus University

Jonathan Lindgren

Chalmers, Fundamental Physics

Jimmy Rotureau

Chalmers, Fundamental Physics

Christian Forssen

Chalmers, Fundamental Physics

D. Fedorov

Aarhus University

A. Jensen

Aarhus University

N. T. Zinner

Aarhus University

Scientific Reports

2045-2322 (ISSN)

Vol. 5 10675

Ab initio approach to nuclear structure and reactions (++) (ANSR)

European Commission (FP7), 2009-12-01 -- 2014-11-30.

Subject Categories

Physical Sciences

DOI

10.1038/srep10675

PubMed

26073680

More information

Latest update

2/28/2018