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Researchers Find Boson Trimer Bound State 0.03542 Units from Threshold

Quantum ZeitgeistOctober 30, 20263 min read

Can attractive interactions on a lattice create precisely defined bound states near zero energy? Analysis reveals that for bosons, an eigenvalue exists distinctly *below* the interaction threshold, measured as 0. 03542, definitively classifying it as a true bound state rather than a resonance.

A comparative analysis shows how particles behave in two distinct lattice models: one with multiple identical bosons and another featuring pairs of fermions alongside an additional particle. Using the Birman, Schwinger principle, a mathematical tool used to study quantum systems, differences in behaviour at strong interactions have been identified. The comparison focused on groups of identical particles, specifically multiple bosons and…

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