Variational calculation of 4He tetramer ground and excited states using a realistic pair potential

Understand

We calculated the 4He trimer and tetramer ground and excited states with the LM2M2 potential using our Gaussian expansion method (GEM) for ab initio variational calculations of few-body systems.

• The method has extensively been used for a variety of three-, four- and five-body systems in nuclear physics and exotic atomic/molecular physics.
• The trimer (tetramer) wave function is expanded in terms of symmetric three-(four-)body Gaussian basis functions, ranging from very compact to very diffuse, without assuming any pair correlation function.
• Calculated results of the trimer ground and excited states are in excellent agreement with the literature.