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Impurity immersed in a two-component few-fermion mixture in a one-dimensional harmonic trap
Marek Teske, Tomasz Sowi\'nski
https://arxiv.org/abs/2507.01625

Impurity immersed in a two-component few-fermion mixture in a one-dimensional harmonic trap
We investigate a one-dimensional three-component few-fermion mixture confined in a parabolic external trap, where one component contains a single particle acting as an impurity. Focusing on the many-body ground state, we analyze how the interactions between the impurity and the other components influence the system's structure. For fixed interaction strengths within the mixture, we identify a critical interaction strength with the impurity for which the system undergoes a structural transition …