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cond-mat.quant-gas2023
Unitary interaction geometries in few-body systems
Lorenzo Contessi, Johannes Kirscher, Manuel Pavon Valderrama
We consider few-body systems in which only a certain subset of the particle-particle interactions is resonant. We characterize each subset by a {\it unitary graph} in which the ver…
cond-mat.quant-gas2018
Four-Body Scale in Universal Few-Boson Systems
Betzalel Bazak, Johannes Kirscher, Sebastian König +3
The role of an intrinsic four-body scale in universal few-boson systems is the subject of active debate. We study these systems within the framework of effective field theory. For…