Scattering of universal fermionic clusters in the resonating group method

Abstract

Mixtures of polarised fermions of two different masses can form weakly-bound clusters, such as dimers and trimers, that are universally described by the scattering length between the heavy and light fermions. We use the resonating group method to investigate the low-energy scattering processes involving dimers or trimers. The method reproduces approximately the known particle-dimer and dimer-dimer scattering lengths. We use it to estimate the trimer-trimer scattering length, which is presently unknown, and find it to be positive.

12 pages, 9 figures

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Cited by in corpus (8)

• Efimov Physics: a review
• Universal clusters as building blocks of stable quantum matter
• Three-body correlations in a two-dimensional SU(3) Fermi gas
• Universal description of three two-component fermions
• Universal dimer-dimer scattering in lattice effective field theory
• Multi-fermion systems with contact theories
• Self-binding of one-dimensional fermionic mixtures with zero-range interspecies attraction
• Shallow Trimers of Two Identical Fermions and One Particle in Resonant Regimes