Journal
PHYSICAL REVIEW A
Volume 106, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.106.043310
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Funding
- RIKEN Junior Research Associate Program
- JSPS [18H05406, 22H01158, 22K13981]
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In this theoretical study, the in-medium two-and three-body correlations in one-dimensional spinless fermions with attractive two-body p-wave interaction were investigated. It was found that the strong-coupling side is more sensitive to the residual three-body interaction than the weak-coupling side.
We theoretically investigate in-medium two-and three-body correlations in one-dimensional spinless fermions with attractive two-body p-wave interaction. By investigating the variational problem of two-and three-body states above the Fermi sea, we elucidate the fate of the in-medium two-and three-body cluster states. The one-dimensional system with the strong p-wave interaction is found to be stable against the formation of three-body clusters even in the presence of the Fermi sea, in contrast to higher-dimensional systems that suffer the strong three-body loss associated with the trimer formation. Our results indicate that the weak two-body coupling side is more sensitive to the residual three-body interaction than the strong-coupling side. By including the dimensionless three-body coupling such that the universality associated with the scattering length is maintained, we find that an in-medium three-body state similar to a squeezed Cooper triple appears.
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