Breakdown of universality in few-boson systems
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⚛️ physics.atom-ph
nucl-th
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analyzeapplybehaviorbreakdowncalculationsconditionsdemonstratedevelop
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We develop a series of resonant short-range two-boson potentials reproducing the same two-body low-energy observables and apply them in three- and four-body calculations. We demonstrate that the universal behavior predicted by effective field theory may be strongly violated and analyze the conditions for this phenomenon.
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