Ground-state magnetization in mixtures of a few ultra-cold fermions in one-dimensional traps

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Abstract

Ground-state properties of a few spin-1/2 ultra-cold fermions confined in a one-dimensional trap are studied by the exact diagonalization method. In contrast to previous studies, it is not assumed that the projection of a spin of individual particles is fixed. Therefore, the spin is treated as an additional degree of freedom and the global magnetization of the system is established spontaneously. Depending on the shape of the trap, inter-particle interactions, and an external magnetic field, the phase diagram of the system is determined. It is shown that, for particular confinements, some values of the magnetization cannot be reached by the ground-state of the system.

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APA

Sowiński, T. (2018). Ground-state magnetization in mixtures of a few ultra-cold fermions in one-dimensional traps. Condensed Matter, 3(1), 1–10. https://doi.org/10.3390/condmat3010007

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