Five-Body Recombination of Identical Bosons

Over the years, numerous investigations have been conducted on few-body systems near the unitary limit. Notable attention has been dedicated to the exploration of bosonic systems, with a particular emphasis on understanding the Efimov effect in the context of three-interacting bosons near s-wave unitarity. This phenomenon carries significant implications for N-boson systems and has been extensively studied for N=3 both experimentally and theoretically. An accurate description of three-body recombination has been developed and tested in the framework of effective field theory. Building upon prior research into these systems, our current work employs the adiabatic hyperspherical treatment, concentrating on systems of identical bosons with N>4, focusing on five interacting bosons. Little has been done theoretically to describe recombination processes for N>3 due to the increasing computational complexity of solving the Schrödinger equation. For instance, for N=5 particles in the center of mass frame would require solving the Schrödinger equation in 12 spatial dimensions, which is computationally challenging to achieve. We aim to provide a qualitative and quantitative description of the five-body recombination process, which would provide valuable insights to support experimental endeavors into measurements of five-body loss in trapped ultracold atoms.