Effects of p-wave interactions on Borromean Efimov trimers in heavy-light Fermi systems

We investigate the effects of p-wave interactions on Efimov trimers in systems comprising two identical heavy fermions and a light particle, with mass ratios larger than 13.6. Our focus lies on the Borromean regime where the ground-state trimer exists in the absence of dimers. Using pair-wise Lennard-Jones potentials and concentrating on the L-pi = 1(-) symmetry, we explore the critical value of the interspecies s-wave scattering length a(c) at which the Borromean state appears in several two-component particle systems. Our exploration encompasses the universal properties of a(c) and the influence of p-wave fermion-fermion interactions on its value. We find that, in the absence of p-wave fermion-fermion interactions, a c is determined universally by the van der Waals radius and mass ratio. However, the introduction of p-wave fermion-fermion interactions unveiled a departure from this universality. Our calculations show that the critical interspecies scattering length a(c) now depends on the details of the fermion-fermion p-wave interaction. And, the presence of p-wave fermion-fermion interactions favors the formation of the Borromean state. Additionally, our investigation reveals that Efimov effect in the 1(-) symmetry persist even when the fermion-fermion interaction reaches the p-wave unitary limit.