Confinement-induced unatomic trimer states in mass-imbalanced systems
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American Physical Society (APS)
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As resonantly interacting trimers of the type AAB are progressively squeezed from D=3 to D=2, unatomic states emerge. We calculated the contacts from the high-momentum tail of the single-particle densities. The sharp increase in the contacts serves as a signature of the transition between the Efimov and unatomic regimes, characterized by the emergence of continuous scale invariance when the system reaches a critical dimension Dc. This continuous scale invariance starts to dominate the behavior of the system at the dimension D¯
