Universal physics of three bosons with isospin

Abstract

We show that there exist two types of universal phenomena for three-boson systems with isospin degrees of freedom. In the isospin symmetric limit, there is only one universal three-boson bound state with the total isospin one, whose binding energy is proportional to that of the two-boson bound state. With large isospin symmetry breaking, the standard Efimov states of three identical bosons appear at low energies. Both phenomena can be realized by three pions with the pion mass appropriately tuned in lattice QCD simulations, or by spin-one bosons in cold atom experiments. Implication to the in-medium softening of multi-pion states is also discussed.

5 pages, 3 figures

References in corpus (6)

• The pion-pion scattering amplitude. IV: Improved analysis with once subtracted Roy-like equations up to 1100 MeV
• Quark mass dependence of the rho and sigma from dispersion relations and Chiral Perturbation Theory
• Efimov Physics in Cold Atoms
• Scattering Models for Ultracold Atoms
• Efimov effect in quantum magnets
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Cited by in corpus (10)

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• Efimov physics in the complex plane
• Universal physics of the few-body system of two neutrons and one flavored meson
• Efimovian states of three charged particles
• Investigation of ${\Xi }^{-}nn$ ($S=-2$) Hypernucleus in Low-energy Pionless Halo Effective Theory
• Efimov resonances above four-boson threshold
• Short-distance production of three particles with large scattering length