Fast trimers in a one-dimensional extended Fermi-Hubbard model

TY - JOUR

T1 - Fast trimers in a one-dimensional extended Fermi-Hubbard model

AU - Dhar, A.

AU - Törmä, P.

AU - Kinnunen, J. J.

PY - 2018/4/24

Y1 - 2018/4/24

N2 - 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 binding energy 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 the 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.

AB - 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 binding energy 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 the 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.

UR - http://www.scopus.com/inward/record.url?scp=85046540531&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.97.043624

DO - 10.1103/PhysRevA.97.043624

M3 - Article

VL - 97

SP - 1

EP - 9

JO - Physical Review A

JF - Physical Review A

SN - 2469-9926

IS - 4

M1 - 043624

ER -