TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysCore.6.1.012
TI  - Composite-boson formalism applied to strongly bound fermion pairs in a one-dimensional trap
PY  - 2023/03/14
UR  - https://scipost.org/SciPostPhysCore.6.1.012
JF  - SciPost Physics Core
JA  - SciPost Phys. Core
VL  - 6
IS  - 1
SP  - 012
A1  - Jiménez, Martín D.
AU  - Cuestas, Eloisa
AU  - Majtey, Ana P.
AU  - Cormick, Cecilia
AB  - We analyze a system of fermions in a one dimensional harmonic trap with attractive delta-interactions between different fermions species, as an approximate description of experiments involving atomic dimers. We solve the problem of two fermion pairs numerically using the so-called "coboson formalism" as an alternative to techniques which are based on the single-particle basis. This allows us to explore the strongly bound regime, approaching the limit of infinite attraction in which the composite particles behave as hard-core bosons. Our procedure is computationally inexpensive and illustrates how the coboson toolbox is useful for ultracold atom systems even in absence of condensation.
ER  -

@Article{10.21468/SciPostPhysCore.6.1.012,
	title={{Composite-boson formalism applied to strongly bound fermion pairs in a one-dimensional trap}},
	author={Martín D. Jiménez and Eloisa Cuestas and Ana P. Majtey and Cecilia Cormick},
	journal={SciPost Phys. Core},
	volume={6},
	pages={012},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhysCore.6.1.012},
	url={https://scipost.org/10.21468/SciPostPhysCore.6.1.012},
}