Mass-symmetry breaking in three-body ions

Details Mass-symmetry breaking in three-body ions Mass-symmetry breaking in three-body ions

2004-06-28

arxiv.org/abs/physics/0406140v1

Physics

Atomic Physics

4 pages, 3 figures

Scientific paper

10.1103/PhysRevA.71.024502

The ground-state energy of three-body ions $(M^+,M^+,m^-)$ evolves when the like-charge constituents are given different masses. The comparison of $(m_1^+,m_2^+,m^-)$ with the average of $(m_1^+,m_1^+,m^-)$ and $(m_2^+,m_2^+,m^-)$ reveals a competition between the symmetric term and the antisymmetric one. The former dominates in the Born--Oppenheimer regime such as the (p,t,e) case, while the latter wins for H$^-$-like systems with two negative light particles surrounding a heavy nucleus. A comparison is also made with the case of baryons in simple quark models with flavour independence.

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