2024/08/16 by Yu‐Hsin Chen, Chen, Yu-Hsin, Chris H. Greene +1 · 3 citations
Physics and Astronomy · #Atomic Physics (physics.atom-ph) #FOS: Physical sciences #Gyrotron and Vacuum Electronics Research #Nonlinear Photonic Systems #Quantum chaos and dynamical systems
paper · pdf · doi:10.48550/arxiv.2408.08993
openalex publication_date 2024/08/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
An unusual class of p-wave universal trimers with symmetry LΠ=1± is identified, for both a two-component fermionic trimer with s- and p-wave scattering length close to unitarity and for a one-component fermionic trimer at p-wave unitarity. Moreover, fermionic trimers made of atoms with two internal spin components are found for LΠ=1±, when the p-wave interaction between spin-up and spin-down fermions is close to unitarity and/or when the interaction between two spin-up fermions is close to the p-wave unitary limit. The universality of these p-wave universal trimers is tested here by considering van der Waals interactions in a Lennard-Jones potential with different numbers of two-body bound states; our calculations also determine the value of the scattering volume or length where the trimer state hits zero energy and can be observed as a recombination resonance. The faux-Efimov effect appears with trimer symmetry LΠ=1- when the two fermion interactions are close to p-wave unitarity and the lowest 1/R2 coefficient gets modified, thereby altering the usual Wigner threshold law for inelastic processes involving 3-body continuum channels.