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Condens. Matter 2018, 3(1), 9; https://doi.org/10.3390/condmat3010009

Fermionic Properties of Two Interacting Bosons in a Two-Dimensional Harmonic Trap

1
Departament de Física Quàntica i Astrofísica, Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
2
Institut de Ciències del Cosmos (ICCUB), Universitat de Barcelona, Martí i Franquès 1, 08028 Barcelona, Spain
3
Institut de Ciències Fotòniques, Parc Mediterrani de la Tecnologia, 08860 Barcelona, Spain
*
Author to whom correspondence should be addressed.
Received: 30 January 2018 / Revised: 9 March 2018 / Accepted: 12 March 2018 / Published: 15 March 2018
(This article belongs to the Special Issue Proceedings of the conference SuperFluctuations 2017)
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Abstract

The system of two interacting bosons in a two-dimensional harmonic trap is compared with the system consisting of two noninteracting fermions in the same potential. In particular, we discuss how the properties of the ground state of the system, e.g., the different contributions to the total energy, change as we vary both the strength and range of the atom–atom interaction. In particular, we focus on the short-range and strong interacting limit of the two-boson system and compare it to the noninteracting two-fermion system by properly symmetrizing the corresponding degenerate ground state wave functions. In that limit, we show that the density profile of the two-boson system has a tendency similar to the system of two noninteracting fermions. Similarly, the correlations induced when the interaction strength is increased result in a similar pair correlation function for both systems. View Full-Text
Keywords: two-dimensional systems; strongly correlated systems; interacting bosons; harmonic oscillator; fermionization two-dimensional systems; strongly correlated systems; interacting bosons; harmonic oscillator; fermionization
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Mujal, P.; Polls, A.; Juliá-Díaz, B. Fermionic Properties of Two Interacting Bosons in a Two-Dimensional Harmonic Trap. Condens. Matter 2018, 3, 9.

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