Abstract
We propose a coupled-rearrangement-channel Gaussian-basis variational method for precise calculations of non-adiabatic three-body systems. The method is applied to the muonic molecule (dtμ) which plays a decisive role in the muon catalyzed DT fusion. An extension is made to the muon transfer reaction (d μ) 1s + t→(t μ) 1s + d. The method is also applied to the trinucleon bound states, 3H and 3He, with the use of realistic two-nucleon and three-nucleon forces. We obtained fast and precise convergence of the calculated results with increasing number of three-body angular-momentum channels. Also shown is an extension of the method to the four-nucleon bound state, 4He.
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