Quadrupole response of a weakly bound bosonic trimer

Evgeny Liverts*, Betzalel Bazak, Nir Barnea

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


The inelastic response of a bosonic trimer is explored in the confines of the Borromean region. To this end we model the interaction between the external field and the bosonic system as a photoabsorptionlike process and study the response of the trimer in the quadrupole approximation. We utilize the hyperspherical-harmonics expansion to solve the Schrödinger equation and the Lorentz integral transform method to calculate the reaction. It is found that the magnitude of the response function and corresponding sum rules increase exponentially when approaching the 3-body threshold. It is also found that this increase is governed by unnatural exponents. The connection between our results and radio-frequency experiments in ultracold atom systems is made.

Original languageAmerican English
Article number112501
JournalPhysical Review Letters
Issue number11
StatePublished - 12 Mar 2012


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