Fast trimers in one-dimensional extended Fermi-Hubbard model

Abstract

We consider a one-dimensional two component extended Fermi-Hubbard model with nearest neighbor interactions and mass imbalance between the two species. We study the stability of trimers, various observables for detecting them, and expansion dynamics. We generalize the definition of the trimer gap to include the formation of different types of clusters originating from nearest neighbor interactions. Expansion dynamics reveal rapidly propagating trimers, with speeds exceeding doublon propagation in strongly interacting regime. We present a simple model for understanding this unique feature of the movement of the trimers, and we discuss the potential for experimental realization.

10 pages, 10 figures

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Cited by in corpus (4)

• Pairs, trimers and BCS-BEC crossover near a flat band: the sawtooth lattice
• Two ultracold highly magnetic atoms in a one-dimensional harmonic trap
• Stability of $(N+1)$-body fermion clusters in multiband Hubbard model
• Manipulating multimer propagation using lattice modulation